XA 4Y M A P PLUS Microbalances

Category Laboratory Balances
Manufacturer Radwag
Country of manufacture Poland

XA 4Y.M.A.P PLUS microbalances feature modern design that enables high accuracy and fast measurements.

They are equipped with reliable measuring system housed in a hermetic casing, this guarantees fast and precise measurement in almost any laboratory conditions. External factors such as air drafts, dust, vibrations, employee competences, generate disturbances that influence the final result of the measurement.

RADWAG-manufactured balances are equipped with range of protections designed to eliminate errors (hermetic weighing chamber, filters dampening vibrations), and tools informing about errors occurrence (vibration sensor, electronic levelling device, ambient conditions module).

The antistatic ionizer, an in-built component of XA 4Y.M.A.P PLUS microbalance, neutralizes electric charges inside the weighing chamber, more precisely it neutralizes uncompensated electric charge accumulated on weighed object. The lower relative humidity and a reading unit of the balance, the more evident influence of static electricity. 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.

Implemented in the XA 4Y.M.A.P PLUS microbalance antistatic ionizer is a modern technology solution which compensates both cations and anions. The ionizer activates when the microbalance 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.

The microbalance features modern hardware and software architecture. Integrated software, Windows Embedded Compact 7, Flash memory, Double Hardware System guarantee speed and reliability when it comes to collecting and processing information. The XA 4Y.M.A.P PLUS series is equipped with LCD 5.7" colour touch screen facilitating device operation and presentation of the results. Complex databases enable users to register, print and export measurements. The balance system supports 13 languages. 'Defined profiles' is a new function, it automatically sets weighing instrument's parameters in accordance with user requirements.


  • FAST – the measurement result is obtained in a very short time
  • FAST DOSING – the balance quickly reacts to mass changes, especially useful for dosing or adding more product to the dispensed portion
  • PRECISION - balance settings providing the minimum standard deviation sd ≤ 1.5 μg,
  • OPERATOR - customization of the parameters in accordance with operator's requirements.

XA 4Y.M.A.P PLUS microbalance is an optimized modern device which among many functions features an option of automatic level control (Level SENSING).

The innovative system for weighing chamber's 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.

Customization option is based on individual operators' profiles and permissions levels that limit the access to the weighing instrument's menu. Programmable proximity sensors offer wide range of possibilities: zeroing, taring, printing and more.

Numerous functions, such as differential weighing enable multi-step mass control of the same sample subjected to different processes.

The software security system and the ability to document the process using printouts (standard/non-standard) ensures compliance of the weighing instruments with GLP/GMP systems in almost every area (pharmacy, petrochemistry, environment protection and many others).

CAUTION: 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. Please follow usage and installation guidelines 



  • 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
  • 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
    • Antistatic coating of the glass panes
Key Attributes
Capacity 6.1g - 52g (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 6/21 4Y.M.A.P PLUS XA 21 4Y.M.A.P PLUS XA 21/52 4Y.M.A.P PLUS XA 52 4Y.M.A.P PLUS
Maximum capacity [Max]  6 / 21 g 21 g 21 / 52 g 52 g
Minimum load 0.1 mg 0.1 mg 0.1 mg 0.5 mg
Readability [d]  1 / 2 µg 1 µg  1 / 5 µg 5 µg
Tare range -21 g -21 g -52 g -52 g
Repeatability (5% Max) 1.8 µg 1.8 µg 2.5 µg 3.5 µg
Repeatability (Max) 4 µg 4 µg 6 µg 6 µg
Linearity ±9 µg ±9 µg ±20 µg ±20 µg
Eccentric load deviation 15 µg 15 µg 20 µg 20 µg
Minimum weight (U=1%,k=2) 0.36 mg 0.36 mg 0.5 mg 0.8 mg
Minimum weight (USP) 3.6 mg 3.6 mg 5 mg 8 mg
Stabilization time ~ 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 ø26 mm
Packaging dimensions 720×385×485 mm
Net weight 14.5 kg
Gross weight 18.9 kg

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