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Ohaus ST300-G Starter Series Portable Water pH Analysis Meter |
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When it comes to versatility, the OHAUS Starter Series of Portable Meters are second to none. With an IP54-rated protective casing shielding the meter from water and/or dust damage, the compact and ergonomically design is adaptable for a wide array of environments. Highlighted by up to 500 hours of operation time and 30 sets of memory data, the Starter Portable Meters make for the most reliable lab partners, whether inside or out. more ... |
Laboratory Equipment >
pH Meters >
pH Meters
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Have Questions? Our Staff will be glad to help |
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Features
When it comes to versatility, the OHAUS Starter Series of Portable Meters are second to none. With an IP54-rated protective casing shielding the meter from water and/or dust damage, the compact and ergonomically design is adaptable for a wide array of environments. Highlighted by up to 500 hours of operation time and 30 sets of memory data, the Starter Portable Meters make for the most reliable lab partners, whether inside or out.
Portable Meters Packed with Productive Features
The Starter Series of portable water analysis meters was created with versatility in mind. They can be operated in the lab with the support of the built-in stands or in the field thanks to their lightweight design. With a clear, well-organized LCD screen and five clearly marked keys, utilizing the Starter Series is simple for novices and professionals alike. The portable Starter Series also boasts IP54 protection which sheilds the meter from damage by water and dust particles and it also offers an intergrated labeling area which can be customized for quick identification. Each meter can store 30 sets of data memory and has the ability to quickly recall calibration data and stored information with one quick touch.
Starter 3000-G
Starter 300-G combines portability with precise pH measurement. An ORP or
temperature electrode can also be easily connected to provide additional
functionality
- Auto buffer recognition stores calibration data and helps to avoid errors
- during the calibration process
- Automatic and manual temperature compensation helps ensure accurate
- readings
This package includes:
- ST300-B Package
- ST320 3-in-1 Plastic Gel pH Electrode
- pH Buffer Powder Sachet (4.01, 7.00, 10.01)
- Portable Bag
After more than a century of perfecting the art of measurement through our durable weighing products, OHAUS precision is now available in the form of a portable pH Water Analysis Meter. This portable meter offers convenience, reliability and durability in one compact design.
Model |
ST300-B |
ST300 |
ST300-G |
ST300C-B |
ST300C |
ST300C-G |
ST300D-B |
ST300D |
ST300D-G |
Package Includes |
300 Meter with IP54 Sets, Electrode Clip Wrist Strap and 4 AAA Batteries (Electrode not included) |
300 Meter, ST320 3-in-1 Plastic Gel pH Electrode and pH Buffer Powder Sachet |
ST300-B, ST320 3-in-1 Plastic Gel pH Electrode, pH Buffer Powder Sachet (4.01, 7.00, 10.01), Portable Bag |
Starter 300C Meter, Conductivity Standards 1413µs/cm and 12.88mS/cm (20 ml bottles), IP54 Sets, Electrode Clip, Wrist Strap, 4 AAA Batteries (Electrode not included) |
300C Meter, with STCON3 4-Pole Conductivity Electrode (70 µs/cm-200 ms/cm, 2 Small Bottles of Standard Conductivity Solution - 1413 µS/cm and 12.88 ms/cm, IP54 Sets, Electrode Clip, Wrist Strap, 4 AAA Batteries |
ST300C-B Package, STCON3 4-Pole Conductivity Electrode (70 µs/cm-200 mS/cm), Portable Bag |
300D Meter with IP54 Sets, Electrode Clip, Wrist Strap and 4 AAA Batteries (Electrode not included) |
300D Meter with STDO11 Galvanic DO Electrode, and STTEMP30 Temperature Electrode |
ST300D-B Package with STDO11 Galvanic DO Electrode, STTEMP30 Temperature Electrode, Portable Bag |
Measurement Range |
0.00 - 14.00 pH -1999 - 1999 mV 0°C - 100°C |
0.0 µS/cm - 199.9 mS/cm 0.1 mg/l - 199.9 g/l (TDS) 0°C - 100°C |
0.0 - 199.9%;200 - 400% 0.00 - 12.99;20.0 - 45.0 mg/L 0.00-19.99;20.0 - 45.0 ppm 0 - 50°C |
Measurement Resolution |
0.01pH 1 mV 0.1°C |
Automatic Range 0.1°C |
0.1%;1% 0.1 mg/L;1 mg/L 0.01 ppm;0.1 ppm 0.1°C |
Barometric Range |
N/A |
N/A |
375 - 825 mmHg 500 - 1100 mbar 500 - 1100 hPa |
Barometric Resolution |
N/A |
N/A |
1 mmHg 1 mbar 1 hPa |
Error Limits |
± 0.01pH ± mV ± 0.5°C |
± 0.5% of the Measured Value ± 0.3°C |
± 1%; ± 0.33°C |
Calibration |
3 Points 1 Predefined Buffer Group |
1 Point 3 Predefined Buffer Groups |
1 or 2 Points 100% and 0% |
Memory |
30 Measurements Last Calibration Data |
30 Measurements Last Calibration Data |
30 Measurements Last Calibration Data |
Power Supply |
4 AAA > 500 Operating Hours |
4 AAA > 250 Operating Hours |
4 AAA > 250 Operating Hours |
Size / Weight |
90 W x 150 D x 35 H 0.18kg (without batteries) |
90 W x 150 D x 35 H 0.16kg (without batteries) |
90 W x 150 D x 35 H 0.18kg (without batteries) |
Display |
Liquid Crystal |
Liquid Crystal |
Liquid Crystal |
Input |
BNC, Impedance > 10e+ 12 Ω Cinch, NTC 30k Ω |
Mini-Din |
BNC Cinch, NTC 30k Ω |
Temperature Compensation |
ATC & MTC |
ATC, Linear: 0.00 %/°C = 10.00%/°C Reference Temperature 20 & 25 °C |
ATC $ MTC |
Salinity Compensation |
N/A |
N/A |
0.0 to 50.0 ppt |
IP Protection |
IP54 |
IP54 |
IP54 |
Housing |
ABS |
ABS |
ABS |
Weight:
2.00 lb
2 Year Manufacture Warranty
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Other Ohaus ST300 Portable Water pH Analysis Meter
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* within the 48 continental US States
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Optional Accessories
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 30031635 Portable Starter Bag for Meters and Electrodes
Ohaus 30031635 Portable Starter Bag for Meters and Electrodes
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more info
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Ohaus STSURF 2 in 1 Plastic Flat pH Electrode
Ohaus STSURF 2 in 1 Plastic Flat pH Electrode
2-in-1 refillable pH
electrode. Suitable
for flat surface
applications, such as
skin, paper etc..
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STSURF |
Shaft Material |
Plastic |
pH Range |
2 to 12pH |
Temp Range |
0 to 80 ºC |
Internal Reference Type |
Ag/AgCl |
Gel/Refillable |
Refillable |
Reference Junction Type |
Ground glass |
Refilling Reference Electrolyte |
3M KCl solution |
Shaft Dimensions |
120 x 12 mm |
Cable Length |
1 m |
Temp Sensor |
No |
Connector |
BNC |
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more info
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Ohaus STSURF 2 in 1 Plastic Flat pH Electrode
Ohaus STSURF 2 in 1 Plastic Flat pH Electrode
2-in-1 refillable pH
electrode. Suitable
for flat surface
applications, such as
skin, paper etc..
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STSURF |
Shaft Material |
Plastic |
pH Range |
2 to 12pH |
Temp Range |
0 to 80 ºC |
Internal Reference Type |
Ag/AgCl |
Gel/Refillable |
Refillable |
Reference Junction Type |
Ground glass |
Refilling Reference Electrolyte |
3M KCl solution |
Shaft Dimensions |
120 x 12 mm |
Cable Length |
1 m |
Temp Sensor |
No |
Connector |
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 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 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 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 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 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 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 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 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 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.
|
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 |
|
|
more info
|
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.
|
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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