XA 4Y M A PLUS Microbalances

Category Laboratory Balances
Manufacturer Radwag
Country of manufacture Poland

Innovative solutions applied in SYNERGY LAB microbalances guarantee extraordinary precision of top-class measuring equipment.

The Best Possible Repeatability and USP Regulations Conformity
The best weighing accuracy and repeatability – with sd ≤ 1d combined with USP regulations conformity (Section 41 and 1251) make 4Y balances a new standard for mass measurement quality.

Innovative 2-Point Adjustment System
Brand new adjustment system guarantees the highest measurement accuracy. It minimizes linearity errors simultaneously providing reliable indications for the whole weighing range.

Reflex Level System
New autolevelling system in XA 4Y.M.A PLUS microbalances ensures:

  • ground tilt test,
  • automatic balance levelling,
  • control of the correct balance level,
  • confirmation of correct balance level on adjustment and weighing reports.
  • Door Opening Automation
    The innovative weighing chamber system for door opening and closing guarantees smooth and quiet door movement, and eliminates vibrations that may disturb the measurement. The solution enables to define how wide the door is to be opened.

    Antistatic Weighing Chamber
    XA 4Y.M.A PLUS microbalance is a device where the influence of electrostatics onto the weighing result has been eliminated due to use of special antistatic coating of the glass panes, and thanks to an in-built ionizer.
    The ionizer compensates electric charges inside the weighing chamber upon placing the sample in it. The lower relative humidity and a reading unit of the balance, the more evident influence of static electricity.

    The ionizer neutralizes any uncompensated electric charge accumulated on the weighed object. The influence of static electricity gives greater repeatability error, often also greater error of indication.

    Measurement errors, due to the harmful effects of electrostatics, often reach the value of thousands of reading units and more. The problem concerns non-conductive samples, e.g. glass flasks, paper filters, plastics, etc.

    Antistatic ionizer implemented in XA 4Y.M.A PLUS balances, due to the application of modern technology, compensates both cations and anions. The ionizer activates when the balance door opens, and deactivates when the door is closed. It is possible to control ionizer operation using weighing instrument panel. The operation is signalled by blue LED diode which emits light when the ionizer is on.


    • Electronic level indicator
      • - ALARM function
      • - graphic level indicator
      • - programmable acceptable tilts
    • Data exchange through USB storage devices
      • - update balance software
      • - export weighing data
      • - export/import databases
      • - export/import balance settings
      • - exchange data between balances
    • Infrared proximity sensors, Optional functions:
      • - PRINT function
      • - TARE function
      • - sensor's sensitivity adjustment
    • Portability
      • Extra option: Balances with a wireless terminal
    • Interfaces
      • - Ethernet
      • - 2×USB
      • - 2×RS 232
      • - 4 in / 4 out
      • - WiFi 2,4GHz b,g,n
    • Removable Weighing chamber
      • Fully removable weighing chamber requiring use of no tools
    • 2-Point Adjustment
      • The highest measurement accuraccy guaranteed
    • Reflex Level Systen
      • Fully automatic balance Levelling
    • Smart Min Weight
      • Minimum Sample Weight improved by 30%
    • Compliance with 21 CFR Part 11
      • Various functions for protecting and monitoring of balance operation
    • Antistatic Weighing Chamber
      • Integrated ionizer and antistatic coating of the glass panes
    • Pressure Equalization System
      • Elimination of errors caused by pressure variations.
    • Lit-Up Weighing Pan
      • Directional LED diode that does not influence the temperature inside the weighing chamber
    Key Attributes
    Capacity 6.1g - 52 (model dependent)
    Readability 1 µg - 5 µg (model dependent)
    Calibration Internal
    Draft protection Doors
    Data output port 2×RS232, 2×USB-A, Ethernet, 4 IN / 4 OUT (digital), Wi-Fi®
    Warranty 2 Years


    Manufacturer Specifications
    Model XA 6.4Y.M.APLUS XA 6/21.4Y.M.APLUS XA 21/52.4Y.M.APLUS XA 21.4Y.M.APLUS XA 52.4Y.M.APLUS
    Maximum capacity [Max] 6.1 g  6 / 21 g 21 / 52 g 21 g 52 g
    Minimum load 0.1 mg 0.1 mg 0.1 mg 0.1 mg 0.5 mg
    Readability [d] 1 µg  1 / 2 µg  1 / 5 µg 1 µg 5 µg
    Tare range -6.1 g -21 g -52 g -21 g -52 g
    Repeatability (5% Max) 1 µg 1.2 µg 1.8 µg 1.2 µg 3 µg
    Repeatability (Max) 2.5 µg 4 µg 6 µg 4 µg 6 µg
    Linearity ±9 µg ±9 µg ±20 µg ±9 µg ±20 µg
    Eccentric load deviation 15 µg 15 µg 20 µg 15 µg 20 µg
    Minimum weight (U=1%,k=2) 0.20 mg 0.24 mg 0.36 mg 0.24 mg 0.6 mg
    Minimum weight (USP) 2 mg 2.4 mg 3.6 mg 2.4 mg 6 mg
    Stabilization time ~ 3.5 s ~ 3.5 s ~ 3.5 s ~ 3.5 s ~ 3.5 s
    Adjustment internal (automatic)
    OIML Class I
    Display 5.7” resistive colour touchscreen
    Communication interface 2×RS232, 2×USB-A, Ethernet, 4 IN / 4 OUT (digital), Wi-Fi®
    Power supply 100 ÷ 240 V AC 50 / 60 Hz
    Power consumption max. 700 mA (wireless terminal - 1A)
    Operating temperature +10 ÷ +40 °C
    Atmospheric humidity 40% ÷ 80%
    Weighing chamber dimensions 199×170×217 mm
    Weighing pan dimensions ø30 mm
    Packaging dimensions 720×385×485 mm
    Net weight 14.5 kg
    Gross weight 18.9 kg

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