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home ScalesGalore - Where you'll find the ideal scale for every weighing need
RADWAG UYA-2.5Y Ultra Micro Weighing Balances RADWAG Balances and Scales
Authorized Dealer
New generation of ultra-microbalances UYA 4Y is designed to meet the highest requirements for determination of mass. Its built-in system of automatic internal adjustment/calibration maintains excellent measurement reliability and accuracy
RADWAG UYA-2.5Y Ultra Micro Weighing Balances
RADWAG UYA-2.5Y Ultra Micro
Weighing Balances

Have Questions?
Call USoremail Us
Our Staff will be glad to help

New generation of ultra-microbalances UYA 5Y is designed to meet the highest requirements for determination of mass. Its built-in system of automatic internal adjustment/calibration maintains excellent measurement reliability and accuracy

5Y Series Ellipsis Laboratory Balances

Safety First

Audited login methods Fast and secure logout Compliance confirmation:
  • CFR part 11
  • GMP
  • Qualifications
  • Validations
  • Quality system
  • Password
  • Fingerprint
  • Face recognition
  • RFID


No space in your fume cupboard or access to the weighing terminal? Or maybe you want to operate the balance remotely?

Thanks to the hotspot, you can operate the balance on any device previously connected to it. This can be a smartphone, tablet, or computer

Connecting ELLIPSIS
ELLIPSIS will connect you directly to:
  • smartphone or a tablet (hotspot)
  • spreadsheet (USB-C, Free Link)
  • printer (Ethernet, Wi-Fi®, USB-A)
  • computer (Ethernet, Wi-Fi®, USB-A)
  • barcode scanner (USB-A)
  • any large screen (HDMI)
  • your PC software (Radwag communication protocol)
  • keyboard and mouse

Ambient Light – one look and everything’s clear

Innovative way of user – balance communication.
It couldn’t be easier: the backlight colour informs you about status, process results, procedures, or alerts.
  • statuses
  • process results
  • procedures
  • alerts

Working Modes

Looking for more than just weighing?
  • Weighing - Basic working mode that displays the mass of a sample
  • Parts counting - Quick counting of samples of similar mass
  • Checkweighing - Control of sample mass in the set min/ max thresholds
  • Dosing - Weighing to a target value
  • Percent weighing - Percent mass control
  • Density - Determining the density of solids and liquids
  • Animal weighing - Control of mass change over a set period of time
  • Formulations - Weighing of predefined ingredients, according to the order described in the formulation
  • Statistics - Real-time statistics determined from carried out weighings
  • Pipette calibration - Checking piston pipettes according to customer-specific requirements or ISO 8655
  • Differential weighing - Analysing the change in mass of a single sample over time
  • SQC - Statistical mass control with set thresholds
  • Peak hold - Control of the maximum mass on the pan
  • Mass control - Statistical control of samples of similar mass
  • Comparator - Control of mass standards
  • PGC - Statistical mass measurement in accordance with Packaged Goods Control


Always the correct choice of a product or ingredient for a formulation.

ELLIPSIS works with RFID tags* that can be used to tag your products or formulation ingredients in the database. It can also be used to identify a user
* RFID ISO/IEC 14443 Type A, 13.56 MHz


Always at hand, grouped so that the essentials never slip away.
Up-to-date information on ambient conditions
Real-time statistics from a series of measurements

Note down your conclusions

One of ELLIPSIS’ innovative features is the ability to add a voice or text note to a series of measurements or a procedure report.
Have you ever wondered if your balance is ready for work?
The Digital Weighing Auditor makes sure it is.
DWA – Digital Weighing Auditor
DWA is a system that monitors:
  • ambient conditions (temperature, humidity, pressure, and vibration),
  • balance levelling,
  • adjustment,
  • USP compliance,
  • ionizer operation.

ELLIPSIS signals the results of the digital audit via Ambient Light, pictograms on the home screen, or a speaker.

Such a large chamber, yet still very accurate balance

Work with different labware in a chamber space of 199 x 157 x 218 mm.

Tool-free disassembly of the weighing chamber
Contaminated weighing chamber? You don’t need any tools to disassemble and clean the ELLIPSIS weighing chamber.

Don’t take our word for it

With ELLIPSIS, you can get:
  • Declaration of conformity
  • Calibration certificate
  • IQ, OQ, PQ documents
  • 21 CFR Part 11 qualification
  • USP compliance qualification
  • Compliance with the latest version of the Pharmacopoeia

21 CFR Part 11

Do you work in the pharmaceutical industry? Do you need a digital signature?
We are offering the laboratory balance which as a standalone fully meets the requirements of 21 CFR Part 11/ EU GMP Annex 11.
  • Full data security
  • Electronic signatures
  • Validations
  • Electronic records
  • Audit trails


Have you ever failed to record the weighing result?
  • Operators
  • Profiles
  • Products
  • Weighing records
  • Alibi
  • Customers
  • Formulations
  • Formulations reports
  • Density reports
  • Control reports
  • SQC statistics
  • Pipettes
  • Pipette calibration reports
  • Series
  • Minimum weight
  • Ambient conditions
  • Warehouses
  • Printouts
  • Universal variables
  • E-signed documents (21 CFR Part 11)
  • Average tares
  • Comparison reports
  • Weight adjustment reports
  • Mass controls

Handy Library

What was the value of the previous measurement?
ELLIPSIS always displays the history of the last 20 measurements on the slide-out panel. It is also here where the measurement series ready for e-signature, in accordance with 21 CFR Part 11, can be found.

Accessories If you use labware, weigh stents or filters, or want to check your pipette, use the ELLIPSIS accessories available Please call us for more info

Q & A

Do I need additional computer software to make the 5Y series fully compliant with 21 CFR Part 11/ EU GMP Annex 11?
RADWAG advanced-class products, including 5Y series balances, do not require any PC software to meet the requirements of 21 CFR Part 11/ EU GMP Annex 11. The balances are equipped with a built-in 21 CFR module, which has been repeatedly validated in the pharmaceutical industry as fully compliant with the aforementioned regulations.

On the new ELLIPSIS 5Y series balances, can I create a text/printout with any content describing my weighing process?
Yes, this is very easy with the 5Y series. Simply create a non-standard printout and fill it with content that describes your weighing process. You can also use over 400 variables to expand your printout with information from the weighing process (for example, date, sample name, net weight, sd value from a series of measurements, etc.).

Will ELLIPSIS allow me to send the measurement directly to a spreadsheet, such as MS Excel, or other word processor?
Yes, every 5Y series balance gives you the option, when connected to your computer with a USB-C cable, to use the Free Link functionality. Free Link is responsible for sending properly formatted data from the balance directly to the currently open spreadsheet.


  • Autotest
  • Dosing
  • Percent Weighing
  • Parts counting
  • Peak hold
  • Formulation
  • Statistics
  • Checkweighing
  • IR sensors
  • GLP Procedures
  • Animal weighing
  • Pipettes Calibration
  • Air density correction
  • Density determination
  • Differential weighing
  • Ambient conditions monitoring
  • Statistical Quality Control
  • Packaged Goods Control
  • ALIBI Memory
  • Wi-Fi®
Model UYA 2.5Y
UYA 6.5Y
UYA 2.5Y.F
Price RADWAG - UYA 2.5Y Ultra M
RADWAG - UYA 6.5Y Ultra M
RADWAG - UYA 2.5Y.F Ultra
Capacity x Readability 2.1 g x 0.1 µg 6.1 g x 0.1 µg 2.1 g x 0.1 µg
Filter - - YES
Minimum load 0.01 mg 0.01 mg 0.01 mg
Verification scale interval [e] 1 mg 1 mg 1 mg
Tare range -2.1 g -2.1 g -2.1 g
Standard repeatability [5% Max] 0.35 µg 0.45 µg 0.35 µg
Standard repeatability [Max] 0.15 µg 0.2 µg 0.15 µg
Standard minimum weight (USP) 0.3 mg 0.4 mg 0.3 mg
Standard minimum weight (U=1%, k=2) 0.03 mg 0.04 mg 0.03 mg
Permissible repeatability [5% Max] 0.35 µg 0.40 µg 0.35 µg
Permissible repeatability [Max] 0.6 µg 0.8 µg 0.6 µg
Linearity +1.5 µg +1.5 µg +1.5 µg
Eccentric load deviation 1.5 µg 1.5 µg 1.5 µg
Sensitivity time drift 1x10-6/YearxRt
Stabilization time 10 - 20 s
Adjustment internal (automatic)
OIML Class I
Leveling system automatic - Reflex Level System
Display 10 in touchscreen
Delivery components 10 mg Ultra-microbalance, terminal, weighing pan, weighing pan for filters, centring ring, glass lid, penseta, brush, fabric dust cover , RS232 cable.
Weighing chamber dimensions ø90x90 mm Ø93 8x35 mm
Weighing pan dimensions ø16 mm ø70 + ø16 mm
Packaging dimensions 655x755x445 mm
Net weight 9.1 kg
Gross weight 16.6 kg
Communication interface USB-A x2, USB-C, HDMI, Ethernet, Wi-Fi, Hotspot
Power supply Adapter: 100 or 240V AC 50/60Hz 1A; 15V DC 2,4A
Balance: 12 – 15V DC 1,4A max*
Operating temperature +10 — +40 oC
Operating temperature change rate +0.3oC/1h (+1oC/8h)
Relative humidity 40% — 80%
Relative humidity +1%/h (+4%/8h)
* The power supply can be connected to the socket on the back of the balance housing or to the terminal.

Old UYA 4Y Models

Model UYA 2.4Y UYA 2.4Y PLUS UYA 2.4Y.F UYA 2.4Y.F PLUS UYA 6.4Y UYA 6.4Y PLUS
Price RADWAG- UYA 2.4Y Ultra Mi
RADWAG  UYA 2.4Y.F Ultra
RADWAG- UYA 6.4Y Ultra Mi
Model with Wireless Terminal UYA 2.4Y.B UYA 2.4Y PLUS.B UYA 2.4Y.F.B UYA 2.4Y.F PLUS.B UYA 6.4Y.B UYA 6.4Y PLUS.B
RADWAG- UYA 2.4Y.B Ultra
RADWAG- UYA 6.4Y.B Ultra
Capacity x Readability 2.1 g x 0.1 µg 2.1 g x 0.1 µg 2.1 g x 0.1 µg 2.1 g x 0.1 µg 6.1 g x 0.1 µg 6.1 g x 0.1 µg
Tare range -2.1 g -2.1 g -2.1 g -2.1 g -6.1 g -6.1 g
Linearity +1.5 µg +1.5 µg +1.5 µg +1.5 µg +1.5 µg +1.5 µg
Eccentric load deviation 1.5 µg 1.5 µg 1.5 µg 1.5 µg 1.5 µg 1.5 µg
With Auto Level - YES - YES - YES
Repeatability 0,3 µg (Rt.0,2g)
0,6 µg (0,2g
0,4 µg (Rt.0,2g)
0,6 µg (0,2g
Sensitivity offset 1,5 x 10-6 x Rt 1,5 x 10-6 x Rt 1,5 x 10-6 x Rt
Sensitivity temperature drift 1x10-6 /ºCxRt 1x10-6 /ºCxRt 1x10-6 /ºCxRt
Sensitivity stability 1x10-6 /YearxRt 1x10-6 /YearxRtxRt Call
Minimum weight (USP) 0.8 mg 0.4 m
Minimum weight 0.08 mg 0.04 mg
Pan size ø 16 mm ø 50 mm ø 16 mm
Weighing chamber dimensions ø 90 x 90 mm ø 118 x 35 mm ø 90 x 90 mm
Stabilization time 10÷20 s
Working temperature +18 ÷ +30 ºC
Working temperature change rate +0,3 ºC/h (+1 ºC/8h)
Adjustment / Calibration automatic (internal)
Power supply 13,5 ÷ 16 V DC / 2,1 A
Casing of the terminal ABS plastic
Display Color 5,7’(640x480) with a resistive touch screen
Processor 2 x 1 GHz
Memory RAM: 256 MB DDR2, flash: 8 GB microSD
Interface 2xUSB host, 2xRS 232, Ethernet 10/100 Mbit, Wireless Module - optional
Audio module YES (voice messages support)
Video support YES (videos and multimedia instructions)
IN / OUT 4 in / 4 out (digital
Ambient conditions
Working temperature +10 º ÷ +30 ºC
Change rate of working temperatures +0,3ºC/1h (+0,5ºC / 12h)
Relative air humidity ** 40% ÷ 80%
Change rate of atmospheric humidity 40% ÷ 60% (+5% / 4h)
Rt - net weight
** - Non-condensing conditions

Additional equipment

  • Anti vibration table for microbalance
  • Profesional weighing table
  • Impact Epson printer
  • Label printer Citizen
  • Anti draft shield for microbalances
  • "Tare" and "Print" foot button
  • "PW-WIN" computer software
  • "RAD-KEY" computer software
  • "REC-FS" computer software
  • Antistatic ionizer DJ-03
  • Ambient conditions module
  • Additional LCD display "WD-5"
  • PC keyboard
  • Power adapter with battery and charger ZR-02
  • Mass standard
  • Antistatic cable
  • Bar code scanner
  • Cable RS 232 (balance - computer) "P0108"
  • Cable RS 232 (balance - Epson, Citizen printer) "P0151"
4Y Series RADWAG Balances

4Y Series RADWAG Balances

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All other inquiries, please phone 718-336-5900
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