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. The device comprises two major components (an indicator and a precise mechanical measuring system which are enclosed separately). Such design eliminates an influence of heat sourcing from instrument's electronics on its mechanical components and additionally protects it from shocks and vibrations caused by users operating the instrument. All the elements of a microbalance are made of glass and steel which eliminates an impact of electrostatics on weighing process.
Filter weighing option
This innovative solution enables the user to easily swap the weighing chamber with the chamber for filter weighing, which considerably expands the UYA 4Y ultra-microbalance functionality. The filter weighing chamber is characterized by high ingress protection. Large open-work weighing pan allows precise weighing of filters of various dimensions (max ø100). It is made of stainless steel which makes the chamber resistant to chemicals, colour change and scratches. The additional chamber does not come standard with the UYA 4Y ultra-microbalance.
In order to carry out the weighing process by means of microbalances and ultra-microbalances correctly, it is necessary to prepare the workstation and to operate the device as required. As a standard, ultra-microbalances are equipped with an anti-draft chamber.
Usage and installation guidelines are to be found in the following document: Installation and usage conditions for ultra-microbalances and microbalances.
|Maximum capacity [Max]
|Repeatability (5% Max)
|Eccentric load deviation
|Minimum weight (U=1%,k=2)
|Minimum weight (USP)
10 - 20
5.7” resistive colour touchscreen
100 ÷ 240 V AC 50 / 60 Hz
|Power consumption max.
700 mA (wireless terminal - 1A)
+10 ÷ +40
|Working temperature change rate
40% ÷ 80%
|Atmospheric humidity change rate
|Weighing chamber dimensions
|Weighing pan dimensions
Repeatability is expressed as a standard deviation from 10 cycles of mass standard weighing.
Stabilization time depends on the ambient conditions and the dynamics of weighing pan loading; specified for FAST profile.
New weighing chamber for MYA.4Y and UYA.4Y microbalances
4y series - Ultra-microbalances and microbalances
RADWAG Remote Desktop - Windows 10
RADWAG Remote Desktop
4Y Balances: Video-Guidance and an on-screen manuals
4Y Series RADWAG Balances
Publications and teaching materials
Defined Weighing Profiles
THBR System 2.0
Detection of vibrations at the electronic balances workstation
4Y - Brand New Series of Laboratory Balances
4Y Series Balances
Ultra-Microbalances and Microbalances
Micro Scale Measurement
SQC in laboratory
Microbalances working conditions