GP-40K Precision Scale from A&D Weighing

Readability (mg) 500
Capacity (g) 41000000
Stabilization Time (sec) 1.5
Repeatability (mg) 500
Pan Size (mm) 384
Internal Calibration Yes
RS-232 Yes
Bluetooth No
USB Yes
PS2 No
WiFi No
Ethernet Yes
Display Alpha Numeric LCD
ISO Yes
GLP Yes
GMP Yes
GCP No
Mobile App No

Superior Sensitivity for High Accuracy Sample Weighing

The GP-40K Precision Scale from A&D Weighing has you covered for all your weighing requirements. Engineered to recognize mass variations through its 500 mg readability, the A&D Weighing GP-40K ensures outstanding sample weighing of particulate matter or small materials, securing close and reliable measurement values. Whether working on requirements of food and textile industry, chemistry applications, medical and pharmaceutical studies, or production and industrial operations, this 500 mg sensitivity scale presents uncomplicated weighing like the Navigator XT NVT1601N/1 Portable Balance from Ohaus Interested in a higher sensitivity option? You may want to try the GP-30KS Precision Scale from A&D Weighing instead.

Complete Reproducibility for Credible Mass Weighing

Obtainiing results that can be reproduced even if multiple users are controlling the A&D Weighing GP-40K is never an issue as it showcases a 500 mg repeatability. Given that similar settings are implemented, the A&D Weighing GP-40K makes an outstanding option for various routine weighing applications as it produces almost unvarying measurement values all through your weighing procesess. Not only does it lessen time when it comes to re-recording and transcribing weighing values every time, it also saves you more of it for thorough data analysis. You can choose the GP-61KS Precision Scale from A&D Weighing if you need a unit having a higher repeatability value.

All-Around Sample Weighing from Lab to Field

Prior to getting a lab balance, be sure to anticipate the sample loads you will be weighing at present and in the future. These should always be within the capacity range of the unit and won't overflow from its weighing pan. With the A&D Weighing GP-40K, you can handle solid or liquid samples, provided these do not go over 41000000 g and its 384 mm weighing pan. Since the balance features internal calibration, allowing fast self calibration everytime the unit is relocated from a place to another, weighing accuracy and precision won't be a problem. Go for the GP-102K Precision Scale from A&D Weighing if you are examining heftier samples.

Well-Designed with Key Features

Internal Calibration icon Internal Calibration

No need to worry precision and accuracy with this A&D Weighing GP precision balance that has an internal calibration feature. Even if the unit is moved from one location to another daily, the balance is capable of recalibrating, considering changes in movement, stability, temperature , and time and then adapting as necessary.

ISO compliant icon ISO Compliant

Adhering to a high quality risk based process management system as well as strict measures when it comes to calibration, routine testing, preventative maintenance, and more, this laboratory scale certifies compliance to ISO standards as well as print guidelines.

GLP Compliant icon GLP Compliant

Returning GLP compliant reports, this A&D Weighing model allows you to keep an eye on tasks of your experiment or study breezily. Minimize time formatting reports with this model that follows criteria of GLP, complete with date, time, balance ID, and other relevant data for quality control purposes.

GMP Compliant icon GMP Compliant

Observing GMP protocols that place priority to quality assurance and management, this A&D Weighing GP-40K lab scale renders reports that include weighing time, results, and operator deatils to name a few. Because of this, it is a good model to consider for food manufacturing, processing, and packaging plus related industries that put high priority on quality management and testing.

Alphanumeric LCD icon Alpha Numeric LCD

Complete with a robust, bright, and perfectly sized Alphanumeric LCD screen, the A&D Weighing GP-40K precision balance makes way for better operational efficiency as blunders concerning data readoutb are decreased and at the same time users get to accurately read weighing results quicker wherever these are placed, even in poorly lit areas.

All-in Connectivity Solutions

An advice when purchasing a top loading balance is not just to consider the technical specifications but to also check the connectivity solutions it can provide. To have the capability to seamlessly transfer and acquire weighing records from different devices is a big plus. Not only can these speed up your data collection and data conversion into tables, graphs, charts, or other formats, it can also save your time lowering human-related errors, therefore expediting your research process. Accomplish this and more with the A&D Weighing GP-40K that can communicate with personal computers and laptops through its ethernet port.

Operational Excellence Defined

Faster results for amplified lab productivity can be achieved through the GP-40K Precision Scale from A&D Weighing that stabilizes to show results within 1.5 seconds. Thanks to its available RS-232 and USB ports, users can quickly carry over acquired weighing records to different computers, devices, and printers like a walk in the park. You have more time that can then be re-allocated to tasks with higher prio as this lab scale already delivers GLP, ISO, and GMP compliant reports, including all relevant details needed.

  • IP65 rated, all-metal body, stainless steel pan

  • Read display at any angle

  • 12 units, comparator, %, counting functions

  • Time & date stamp built-in

  • User calibration function

  • 5 year warranty


For higher capacity weighing with the choice of an adjustable swing arm display (GP) or mountable detached display (GP-S). SmartRange feature for improved precision, regardless of tare container weight.

Internal Calibration

The GP internal calibration with an internal mass saves time and money. External calibration requires a great deal of skill, time and an expensive external mass. With our internal calibration with internal mass, the balance is calibrated very quickly. ■ Automatic Self Calibration — Self-calibrates automatically when the balance detects ambient temperature changes.

■ One Touch Automatic Calibration — Allows you to calibrate the balance on demand with just the push of a button.  

■ Calibration is essential for accuracy in weighing. For example, in high-resolution balances, changes in sensitivity drift can be caused by changes in the ambient temperature. Take the GP-30K for example, the weight might change by 0.9g with a change of 10˚C ( Sample’s weight: 30kg ).

■ Thanks to our Double Leveraged Super Hybrid Sensor, the GP's motor-driven internal calibration mass is equivalent to a 50kg calibration mass in terms of top loading capacity on the weighing pan. The adjusted weighing accuracy is within +–15 digits in relation to the weighing capacity while conforming to the OIML's Class II balances definitions after using GP's internal calibration mass.

Standard WinCT

WinCT (Windows Communication Tools Software), provides easy transmission of weighing data from A&Dbalances to a computer using the RS-232C interface. Speed of data transfer into Windows applications in a manageable format is limited only by the computer’s capabilities. RS-232C

RS-232C Interface

Using a USB/ RS-232C Converter, you can transfer data between a USB-equipped PC and a GP balance. This also makes your GP balance hot-swappable meaning that there is no need to turn the balance and/or computer off before disconnecting the balance.


For over 40 years, A&D Weighing has been providing advanced and accurate measurement instruments for a diverse range of markets including Research, Industrial Protection, Jewelry, and Food Processing. One of the trusted names when it comes to precision measurement and product inspection, A&D Weighing delivers an innovative line of electronic balances, digital scales, weighing indicators and controllers, load cells, and non-destructive measurement equipment. Complying to ISO:9001-2008 standards, A&D manufactures high quality products from worldwide operations in the US, Japan, Germany, Australia, Great Britain, and Korea and serves the Americas from its headquarters in Silicon Valley, San Jose, CA. Trust A&D to prove performance with its 5-year warranty on all microbalances, analytical balances, and precision scales.

A&D’s product line available on Lab.Equipment is comprised of the following:

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Ethernet: Yes
Mobile App: No
[Lab Balance] Bluetooth: No
[Lab Balance] Capacity (g): 41000000
[Lab Balance] Display: Alpha Numeric LCD
[Lab Balance] GCP: No
[Lab Balance] GLP: Yes
[Lab Balance] GMP: Yes
[Lab Balance] ISO: Yes
[Lab Balance] Internal Calibration: Yes
[Lab Balance] PS2: No
[Lab Balance] Pan Size (mm): 384
[Lab Balance] RS-232: Yes
[Lab Balance] Readability (mg): 500
[Lab Balance] Repeatability (mg): 500
[Lab Balance] Stabilization Time (sec): 1.5
[Lab Balance] USB: Yes
[Lab Balance] WiFi: No

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