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Ohaus ST5000-B Starter Series pH Bench Meter (30129895) |
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Backed by OHAUS’ century-old commitment to providing precise measurement, Starter 5000 provides accurate pH and ORP measurement for high-level experiments and research. Enhanced features, advanced technology, and high performance have been combined to support complex laboratory tasks requiring pH measurement more ... |
Laboratory Equipment >
pH Meters >
pH Meters
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Features
High Performance Bench Meter for Universal Applications
Backed by OHAUS’ century-old commitment to providing precise measurement, Starter 5000 provides accurate pH and ORP measurement for high-level experiments and research. Enhanced features, advanced technology, and high performance have been combined to support complex laboratory tasks requiring pH measurement
Standard Features Include:
- Various High-Level Capabilities Propel Powerful Performance — With a 1,000 measurement memory, eight predefined buffer groups, and three endpoint modes, Starter 5000 provides various ways to achieve precise pH measurement.
- Advanced Software and Technology Support Complex Applications and Intuitive Operation — Starter 5000 has a user-friendly interface, similar to other smart devices used daily. With a large LCD touchscreen display, users will find themselves intuitively navigating through all applications.
- Enhanced Features Offer Protection & Simple Use of this Advanced Meter — Starter 5000 also has many features that promote ease of use, convenience, as well as protection, including a standalone electrode arm, IP54 housing and in-use cover.
Various High-Level Capabilities Propel Powerful Performance
High resolution
- 0.001/0.01/0.1pH
- 0.01/0.1/1 mV
Advanced Memory
- Large memory bank can store the data of up to 1,000 individual measurements
Heightened Performance
- Meter can be set to record continuous measurement at designated intervals of time
- Graphs can be simultaneously generated
- Starter 5000 has a GLP measurement mode that records critical information such as User ID and sample ID to generate complete and traceable information
- 10 sensors that can store the results of 10 separate calibrations for each sensor
- pH-mV axis graphs can be viewed for each set of calibration data
- An alert can be set to remind user to calibrate the meter
Accuracy
- Up to a nine point calibration ensures extreme precision with a large calibration curve that covers a wider pH measurement range
- Manual, automatic, and time endpoints produce enhanced results
- Eight predefined buffers and one customizable buffer are standard
Advanced Software and Technology Support Complex Applications and Intuitive Operation
All of Starter 5000’s features are at your fingertips. The color touchscreen display operates similar to everyday products such as smartphones and tablet computers. Color Touchscreen Display
- 4.3" high-resolution color touchscreen has large digits and well-arranged icons
- Recognizable icons provide direct, one-touch access to important information including user ID, sample ID, date, time, current calibration group, and sensor performance where you can check detailed calibration data
- Return to the main menu from any screen with just one button tap on the display
- One touch toggling between pH, mV(ORP) and Rel.mV
Enhanced Features Offer Protection & Practical Operation of this Advanced Meter
Protection
- IP54 housing protects the meter from damage by water and dust particles
- The transparent in-use cover provides an extra layer of protection
Practical Operation
- The positioning of the standalone electrode holder can be moved around the base to fit your workstation best and the height can also be adjusted for optimal viewing
- Use the built-in USB host port to export data or RS232 to connect a printer to the meter
Weight:
2.00 lb
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2 Year Manufacture Warranty
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Other Ohaus ST5000 pH Bench Meter
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Specifications
Models |
ST5000-B |
ST5000-F |
5000 meter, stand alone electrode holder, ST5000 in-use-cover, 4G USB-driver |
5000 meter,ST350 ,pH buffer powder sachet |
Measurement Range |
-2.000…20.000 pH -2000.00…+2000.00 mV -30°C…130 °C |
Resolution |
0.1/0.01/0.001pH 1/0.1/0.01mV 0.1 °C |
Error Limits |
± 0.002 pH ± 1 mV ± 0.1 °C |
Buffer Group |
8 predefined groups, 1 self define group |
pH Calibration |
1-9 points |
Memory |
1000 sets, with 10*10 calibration data |
Power Supply |
110-240V/50-60Hz, 9 V DC |
Size/Weight |
220 W × 175 D× 78 H mm / 0.55 kg |
Display |
Color Touch-Screen LCD |
Input |
BNC, impedance >3*10e+12 Ω Cinch, NTC 30 kΩ |
Output |
USB & RS232 |
Temperature Compensation |
ATC and MTC |
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* within the 48 continental US States
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Optional Accessories
more info
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Ohaus 30059316 PC-SF40A 9 Pin-9 Pin Adapter
Ohaus 30059316 PC-SF40A 9 Pin-9 Pin Adapter
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more info
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Ohaus ST350 Glass pH Electrode
3 in 1 Glass pH Electrode
3-in-1 refillable
pH electrode,
with integrated
temperature probe.
Suitable for normal
samples
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ST350 |
ST360 |
Shaft Material |
Glass |
Glass |
Temp Range |
0 to 100°C |
0 to 100°C |
Internal Reference Type |
Ag/AgCl |
Ag/AgCl |
Gel/Refillable |
Refillable |
Refillable |
Reference Junction Type |
Annular ceramic |
Ceramic pin |
Refilling Reference Electrolyte |
3M KCl solution |
Double salt-bridge
3M KCl (AgCl)---Pure
KCl solution |
Shaft Dimensions |
120 x 12 mm |
120 x 12 mm |
Cable Length |
1 m |
1 m |
Temp Sensor |
Yes |
No |
Connector |
BNC Cinch |
BNC |
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more info
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Ohaus ST5000-F Starter Series pH Bench Meter with ST350 (30129896)
High Performance Bench Meter for Universal Applications
Backed by OHAUS’ century-old commitment to providing precise measurement, Starter 5000 provides accurate pH and ORP measurement for high-level experiments and research. Enhanced features, advanced technology, and high performance have been combined to support complex laboratory tasks requiring pH measurement
Standard Features Include:
- Various High-Level Capabilities Propel Powerful Performance — With a 1,000 measurement memory, eight predefined buffer groups, and three endpoint modes, Starter 5000 provides various ways to achieve precise pH measurement.
- Advanced Software and Technology Support Complex Applications and Intuitive Operation — Starter 5000 has a user-friendly interface, similar to other smart devices used daily. With a large LCD touchscreen display, users will find themselves intuitively navigating through all applications.
- Enhanced Features Offer Protection & Simple Use of this Advanced Meter — Starter 5000 also has many features that promote ease of use, convenience, as well as protection, including a standalone electrode arm, IP54 housing and in-use cover.
Various High-Level Capabilities Propel Powerful Performance
High resolution
- 0.001/0.01/0.1pH
- 0.01/0.1/1 mV
Advanced Memory
- Large memory bank can store the data of up to 1,000 individual measurements
Heightened Performance
- Meter can be set to record continuous measurement at designated intervals of time
- Graphs can be simultaneously generated
- Starter 5000 has a GLP measurement mode that records critical information such as User ID and sample ID to generate complete and traceable information
- 10 sensors that can store the results of 10 separate calibrations for each sensor
- pH-mV axis graphs can be viewed for each set of calibration data
- An alert can be set to remind user to calibrate the meter
Accuracy
- Up to a nine point calibration ensures extreme precision with a large calibration curve that covers a wider pH measurement range
- Manual, automatic, and time endpoints produce enhanced results
- Eight predefined buffers and one customizable buffer are standard
Advanced Software and Technology Support Complex Applications and Intuitive Operation
All of Starter 5000’s features are at your fingertips. The color touchscreen display operates similar to everyday products such as smartphones and tablet computers. Color Touchscreen Display
- 4.3" high-resolution color touchscreen has large digits and well-arranged icons
- Recognizable icons provide direct, one-touch access to important information including user ID, sample ID, date, time, current calibration group, and sensor performance where you can check detailed calibration data
- Return to the main menu from any screen with just one button tap on the display
- One touch toggling between pH, mV(ORP) and Rel.mV
Enhanced Features Offer Protection & Practical Operation of this Advanced Meter
Protection
- IP54 housing protects the meter from damage by water and dust particles
- The transparent in-use cover provides an extra layer of protection
Practical Operation
- The positioning of the standalone electrode holder can be moved around the base to fit your workstation best and the height can also be adjusted for optimal viewing
- Use the built-in USB host port to export data or RS232 to connect a printer to the meter
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more info
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Ohaus ST320 2 in 1 Plastic Gel pH Electrode (83033967)
2 in 1 ST320 Plastic Refillable pH Electrode
This delicate measuring instrument requires proper care and maintenance to produce accurate and reliable results and to prolong useful life. Always keep the electrode moist when not in use for a period of time by using an electrode storage solution (3M KCl). DO NOT store the electrode in distilled or deionized water, as this will cause ions to leach out of the glass bulb and reference electrolyte, causing slow and sluggish response. Remove the electrode gently from the storage bottle and rinse it with distilled water before use. For long-term storage, always keep the electrode in the bottle filled with sufficient storage solution to cover the bulb. Replenish the bottle as needed.
Suitable for normal samples. Use with OHAUS pH meters with BNC input connector and Cinch temperature connector.
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ST310 |
ST210 |
ST320 |
pH Range |
0 to 14 pH |
0 to 14 pH |
0 to 14 pH |
Temp Range |
0 to 80°C |
0 to 80°C |
0 to 80°C |
Shaft Material |
Plastic |
Plastic |
Plastic |
Internal Reference Type |
Ag/AgCl |
Ag/AgCl |
Ag/AgCl |
Gel/Refillable |
Refillable |
Refillable |
Non-Refillable Gel |
Reference Junction Type |
Ceramic pin |
Ceramic pin |
Fiber pin |
Refilling Reference Electrolyte |
3M KCl solution |
3M KCl solution |
3M KCl gel |
Shaft Dimensions |
4-3/4" x 3/4" |
4-3/4" x 3/4" |
4-3/4" x 3/4" |
Cable Length |
3-1/4" |
3-1/4" |
3-1/4" |
Temp Sensor |
Yes |
No |
Yes |
Connector |
BNC Cinch |
BNC |
BNC |
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more info
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Ohaus ST310 3 in 1 Plastic Refillable pH Electrode
3 in 1 ST310 Plastic Refillable pH Electrode
This delicate measuring instrument requires proper care and maintenance to produce accurate and reliable results and to prolong useful life. Always keep the electrode moist when not in use for a period of time by using an electrode storage solution (3M KCl). DO NOT store the electrode in distilled or deionized water, as this will cause ions to leach out of the glass bulb and reference electrolyte, causing slow and sluggish response. Remove the electrode gently from the storage bottle and rinse it with distilled water before use. For long-term storage, always keep the electrode in the bottle filled with sufficient storage solution to cover the bulb. Replenish the bottle as needed.
Suitable for normal samples. Use with OHAUS pH meters with BNC input connector and Cinch temperature connector.
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ST310 |
ST210 |
ST320 |
pH Range |
0 to 14 pH |
0 to 14 pH |
0 to 14 pH |
Temp Range |
0 to 80°C |
0 to 80°C |
0 to 80°C |
Shaft Material |
Plastic |
Plastic |
Plastic |
Internal Reference Type |
Ag/AgCl |
Ag/AgCl |
Ag/AgCl |
Gel/Refillable |
Refillable |
Refillable |
Non-Refillable Gel |
Reference Junction Type |
Ceramic pin |
Ceramic pin |
Fiber pin |
Refilling Reference Electrolyte |
3M KCl solution |
3M KCl solution |
3M KCl gel |
Shaft Dimensions |
4-3/4" x 3/4" |
4-3/4" x 3/4" |
4-3/4" x 3/4" |
Cable Length |
3-1/4" |
3-1/4" |
3-1/4" |
Temp Sensor |
Yes |
No |
Yes |
Connector |
BNC Cinch |
BNC |
BNC |
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more info
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Ohaus ST260 2 in 1 Glass Double salt bridge pH Electrode Can Test Trisbuffer
2 in 1 Glass Double salt bridge pH Electrode Can Test Tris-buffer
2-in-1 double saltbridge
pH electrode.
Suitable for samples
which may react with
Ag ions, such as trisbuffer
solution.
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ST350 |
ST260 |
Shaft Material |
Glass |
Glass |
Temp Range |
0 to 100°C |
0 to 100°C |
Internal Reference Type |
Ag/AgCl |
Ag/AgCl |
Gel/Refillable |
Refillable |
Refillable |
Reference Junction Type |
Annular ceramic |
Ceramic pin |
Refilling Reference Electrolyte |
3M KCl solution |
Double salt-bridge
3M KCl (AgCl)---Pure
KCl solution |
Shaft Dimensions |
120 x 12 mm |
120 x 12 mm |
Cable Length |
1 m |
1 m |
Temp Sensor |
Yes |
No |
Connector |
BNC Cinch |
BNC |
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more info
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Ohaus ST230 2 in 1 Glass Muddy Sample pH Electrode
2 in 1 Glass Muddy Sample pH Electrode
This delicate measuring instrument requires proper care and maintenance to produce accurate and reliable results and to prolong useful life. Always keep the electrode moist when not in use for a period of time by using an electrode storage solution (3M KCl). DO NOT store the electrode in distilled or deionized water, as this will cause ions to leach out of the glass bulb and reference electrolyte, causing slow and sluggish response. Remove the electrode gently from the storage bottle and rinse it with distilled water before use. For long-term storage, always keep the electrode in the bottle filled with sufficient storage solution to cover the bulb. Replenish the bottle as needed.
General purpose glass-body refillable pH electrode. Suitable for muddy samples such as juice, milk, etc. Use with all pH meters with BNC input connector.
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ST230 |
STPURE |
STEMP30 |
pH Range |
0 to 14 pH |
0 to 13 pH |
- |
Temp Range |
0 to 100°C |
0 to 100°C |
0 to 100°C |
Shaft Material |
Glass |
Glass |
Stainless Steel |
Internal Reference Type |
Ag/AgCl |
Ag/AgCl |
- |
Gel/Refillable |
Refillable |
Refillable |
- |
Reference Junction Type |
Annular ceramic |
Groundglass |
- |
Refilling Reference Electrolyte |
3M KCl solution |
3M KCl solution |
- |
Shaft Dimensions |
4-5/16" x 3/4" |
4-3/4" x 3/4" |
4-3/4" x 3/4" |
Cable Length |
3-1/4" |
3-1/4" |
3-1/4" |
Temp Sensor |
No |
No |
Yes |
Temp Accuracy |
- |
- |
±0.3°C |
Temp Probe |
- |
- |
NTC 30k |
Connector |
BNC Cinch |
BNC |
BNC Cinch |
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more info
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Ohaus ST210 2 in 1 Plastic Refillable pH Electrode
2 in 1 ST210 Plastic Refillable pH Electrode
This delicate measuring instrument requires proper care and maintenance to produce accurate and reliable results and to prolong useful life. Always keep the electrode moist when not in use for a period of time by using an electrode storage solution (3M KCl). DO NOT store the electrode in distilled or deionized water, as this will cause ions to leach out of the glass bulb and reference electrolyte, causing slow and sluggish response. Remove the electrode gently from the storage bottle and rinse it with distilled water before use. For long-term storage, always keep the electrode in the bottle filled with sufficient storage solution to cover the bulb. Replenish the bottle as needed.
Suitable for normal samples. Use with OHAUS pH meters with BNC input connector and Cinch temperature connector.
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ST310 |
ST210 |
ST320 |
pH Range |
0 to 14 pH |
0 to 14 pH |
0 to 14 pH |
Temp Range |
0 to 80°C |
0 to 80°C |
0 to 80°C |
Shaft Material |
Plastic |
Plastic |
Plastic |
Internal Reference Type |
Ag/AgCl |
Ag/AgCl |
Ag/AgCl |
Gel/Refillable |
Refillable |
Refillable |
Non-Refillable Gel |
Reference Junction Type |
Ceramic pin |
Ceramic pin |
Fiber pin |
Refilling Reference Electrolyte |
3M KCl solution |
3M KCl solution |
3M KCl gel |
Shaft Dimensions |
4-3/4" x 3/4" |
4-3/4" x 3/4" |
4-3/4" x 3/4" |
Cable Length |
3-1/4" |
3-1/4" |
3-1/4" |
Temp Sensor |
Yes |
No |
Yes |
Connector |
BNC Cinch |
BNC |
BNC |
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more info
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Ohaus STMICRO5 2 in 1 Glass Micro Sample pH Electrode, 80 x 5mm
2 in 1 Glass Micro Sample pH Electrode, 80 x 5mm
2-in-1 80mm length
and 5mm diameter
refillable pH
electrode. Suitable
for small samples,
tubes, and narrow
containers.
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STMICRO5 |
STMICRO8 |
Shaft Material |
Glass |
Glass |
Temp Range |
0 to 100°C |
0 to 100°C |
Internal Reference Type |
Ag/AgCl |
Ag/AgCl |
Gel/Refillable |
Refillable |
Refillable |
Reference Junction Type |
Annular ceramic |
Annular ceramic |
Refilling Reference Electrolyte |
3M KCl solution |
3M KCl solution |
Shaft Dimensions |
80 x 5 mm |
150 x 8 mm |
Cable Length |
1 m |
1 m |
Temp Sensor |
No |
No |
Connector |
BNC |
BNC |
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more info
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Ohaus STMICRO8 2 in 1 Glass Micro Sample pH Electrode, 150 x 8mm
2 in 1 Glass Micro Sample pH Electrode, 150 x 8mm
2-in-1 150mm length
and 8mm diameter
refillable pH
electrode. Suitable
for small samples,
tubes, and narrow
containers.
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STMICRO5 |
STMICRO8 |
Shaft Material |
Glass |
Glass |
Temp Range |
0 to 100°C |
0 to 100°C |
Internal Reference Type |
Ag/AgCl |
Ag/AgCl |
Gel/Refillable |
Refillable |
Refillable |
Reference Junction Type |
Annular ceramic |
Annular ceramic |
Refilling Reference Electrolyte |
3M KCl solution |
3M KCl solution |
Shaft Dimensions |
80 x 5 mm |
150 x 8 mm |
Cable Length |
1 m |
1 m |
Temp Sensor |
No |
No |
Connector |
BNC |
BNC |
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more info
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Ohaus STPURE 2 in 1 Glass Pure Water Sample pH Electrode
2 in 1 Glass Pure Water Sample pH Electrode
This delicate measuring instrument requires proper care and maintenance to produce accurate and reliable results and to prolong useful life. Always keep the electrode moist when not in use for a period of time by using an electrode storage solution (3M KCl). DO NOT store the electrode in distilled or deionized water, as this will cause ions to leach out of the glass bulb and reference electrolyte, causing slow and sluggish response. Remove the electrode gently from the storage bottle and rinse it with distilled water before use. For long-term storage, always keep the electrode in the bottle filled with sufficient storage solution to cover the bulb. Replenish the bottle as needed.
Glass-body refillable pH electrode for pure water (distilled water, rain water, tap water, etc.). Use with all pH meters with BNC input connector..
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ST230 |
STPURE |
STEMP30 |
pH Range |
0 to 14 pH |
0 to 13 pH |
- |
Temp Range |
0 to 100°C |
0 to 100°C |
0 to 100°C |
Shaft Material |
Glass |
Glass |
Stainless Steel |
Internal Reference Type |
Ag/AgCl |
Ag/AgCl |
- |
Gel/Refillable |
Refillable |
Refillable |
- |
Reference Junction Type |
Annular ceramic |
Groundglass |
- |
Refilling Reference Electrolyte |
3M KCl solution |
3M KCl solution |
- |
Shaft Dimensions |
4-5/16" x 3/4" |
4-3/4" x 3/4" |
4-3/4" x 3/4" |
Cable Length |
3-1/4" |
3-1/4" |
3-1/4" |
Temp Sensor |
No |
No |
Yes |
Temp Accuracy |
- |
- |
±0.3°C |
Temp Probe |
- |
- |
NTC 30k |
Connector |
BNC Cinch |
BNC |
BNC Cinch |
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more info
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Ohaus STTEMP30 Temperature Electrode
Ohaus STTEMP30 Temperature Electrode
Temperature variations can effect pH. However, at a certain pH (usually 7 pH), temperature will not have an effect on the potential of the system. This is known as the isopotential point. If automatic compensation is not practical, the magnitude of error equation can be used to determine error (0.003 pH/° C/pH unit from pH 7).
Note: The temperature compensation here refers to electrode-related temperature variation and not solution-related variations.
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ST230 |
STPURE |
STEMP30 |
pH Range |
0 to 14 pH |
0 to 13 pH |
- |
Temp Range |
0 to 100°C |
0 to 100°C |
0 to 100°C |
Shaft Material |
Glass |
Glass |
Stainless Steel |
Internal Reference Type |
Ag/AgCl |
Ag/AgCl |
- |
Gel/Refillable |
Refillable |
Refillable |
- |
Reference Junction Type |
Annular ceramic |
Groundglass |
- |
Refilling Reference Electrolyte |
3M KCl solution |
3M KCl solution |
- |
Shaft Dimensions |
4-5/16" x 3/4" |
4-3/4" x 3/4" |
4-3/4" x 3/4" |
Cable Length |
3-1/4" |
3-1/4" |
3-1/4" |
Temp Sensor |
No |
No |
Yes |
Temp Accuracy |
- |
- |
±0.3°C |
Temp Probe |
- |
- |
NTC 30k |
Connector |
BNC Cinch |
BNC |
BNC Cinch |
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more info
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Ohaus STORP1 Gel Plastic ORP Electrode
Gel Plastic ORP Electrode
Related to the overall availability of electrons in the media, specifically the ratio of positive and negative ions in the solution. Also called Redox electrode. ORP is the only practical method for electronically monitoring sanitizer effectiveness. ORP value is an important parameter of water and is a measurement to oxidize contaminants. Normal application areas are swimming pools, fish farming, and aquariums. ORP is expressed in millivolts (mV). A range of -1000mV to 1000mV is common with most ORP tests. The pH value influences the ORP value significantly. If the platinum band or disk is contaminated, the electrode should be cleaned, otherwise response time will slow or inaccurate measurements will be given.
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STORP1 |
STORP2 |
Shaft Material |
Plastic |
Glass |
Temp Range |
0 to 80°C |
0 to 100°C |
Internal Reference Type |
Ag/AgCl |
Ag/AgCl |
Gel/Refillable |
Non-Refillable Gel |
Refillable |
Reference Junction Type |
Ceramic pin |
Annular ceramic |
Refilling Reference Electrolyte |
3M KCl solution |
3M KCl solution |
Shaft Dimensions |
4-3/4" x 3/4 |
4-3/4" x 3/4" |
Cable Length |
3-1/4" |
3-1/4" |
Temp Sensor |
No |
No |
Connector |
BNC |
BNC |
Zero Potential Value |
86mV±15mV |
86mV±15mV |
Grade Difference |
Greater than or equal to 165mV |
Greater than or equal to 165mV |
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more info
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Ohaus STORP2 Refillable Glass ORP Electrode
Refillable Glass Electrode
Related to the overall availability of electrons in the media, specifically the ratio of positive and negative ions in the solution. Also called Redox electrode. ORP is the only practical method for electronically monitoring sanitizer effectiveness. ORP value is an important parameter of water and is a measurement to oxidize contaminants. Normal application areas are swimming pools, fish farming, and aquariums. ORP is expressed in millivolts (mV). A range of -1000mV to 1000mV is common with most ORP tests. The pH value influences the ORP value significantly. If the platinum band or disk is contaminated, the electrode should be cleaned, otherwise response time will slow or inaccurate measurements will be given.
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STORP1 |
STORP2 |
Shaft Material |
Plastic |
Glass |
Temp Range |
0 to 80°C |
0 to 100°C |
Internal Reference Type |
Ag/AgCl |
Ag/AgCl |
Gel/Refillable |
Non-Refillable Gel |
Refillable |
Reference Junction Type |
Ceramic pin |
Annular ceramic |
Refilling Reference Electrolyte |
3M KCl solution |
3M KCl solution |
Shaft Dimensions |
4-3/4" x 3/4 |
4-3/4" x 3/4" |
Cable Length |
3-1/4" |
3-1/4" |
Temp Sensor |
No |
No |
Connector |
BNC |
BNC |
Zero Potential Value |
86mV±15mV |
86mV±15mV |
Grade Difference |
Greater than or equal to 165mV |
Greater than or equal to 165mV |
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more info
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Ohaus- Buffer Powder Set pH4.01;7.00;10.01
83033971 Buffer Powder Set pH4.01;7.00;10.01
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more info
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OHAUS Reference electrolyte for pH electrodes (3M KCl solution saturated AgCl, 30ml)
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more info
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OHAUS pH Sensor Protection Bottles (Bag of 10)
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more info
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pH electrode protection solution(3M KCl)
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more info
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OHAUS Stand Alone Electrode Holder for ST3100/3100C and ST5000 Electrodes
ST3100/3100C and ST5000 stand-alone electrode holder
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more info
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Buffer Solution pH1.68 250ml
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more info
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Buffer Solution pH4.01 250ml
Buffer pH4.01 250ml
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more info
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Buffer Solution pH6.86 250ml
Buffer pH6.86 250ml
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more info
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Buffer Solution pH7.00 250ml
Buffer pH7.00 250ml
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more info
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Buffer Solution pH9.18 250ml
Buffer pH9.18 250ml
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more info
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Buffer Solution pH12.45 250ml
Buffer pH12.45 250ml
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more info
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Standard Conduct Solution 1413cm 250ml
Standard Conduct 1413cm 250ml
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