A professional manufacture and sales of various electronic balances, moisture analyzers, viscometers and laboratory instrument manufacturer of weight measure instruments..

Products

Send your inquiry

W&J Instrument Co., Ltd. specializes in manufacturing analytical balance scale, precision weighing scale, density scale, moisture analyzer, digital viscometer, ph meter and test calibration weights. We have passed certification ISO9001:2008, ISO14001:2004, CE and ROHS.

We have over 20 years of production experience and over 15 years of export sales experience, and more than 2000m2 factory.

60kg 100kg 200kg 300kg 500kg 1g 10g Precision Weighing Platform Scale

1. Pan: 300×400 mm or 400*500 mm (iron stainless)2. Display: LCD (white back-light) (L×W) 110×30 mm3. Power: AC/DC (Rechargeable Battery: work > 40h)4. Units: kg, g, oz, lb, ct5. More functions: counting, last remember, %, full range tare, over-load protection, zero tracking, low-battery indicator6. Attachments: english manual, adaptor, rechargeable battery7. Speed: 2 s8. Value stable time: 1 s

M1 F2 F1 Class Grip Handle Test Weight Stackable Calibration Counter Pillow Weights

Definition and function of weightsA calibration weight is a precisely manufactured mass block used to provide a standard mass or load during the measurement process. Its main applications include:a. Calibration of measuring equipment: such as balances, electronic scales, etc., to ensure that the readings they display are accurate.b. Calibration of other equipment: such as certain mechanical equipment, used to determine the load or other parameters of the machine.c. Providing standards for scientific research: In some experiments, accurate mass is required as a reference, and weights come in handy.

0.01g 1kg/2kg/3kg/4kg/5kg/6kg Table Top Loading Under Hook Weighing Scale Laboratory Balance

W&J Best Quality Analytical Balance Factory,Good product quality, reasonable price and high cost performanceW&J brand new automatic internal school analytical balance has a large touch color screen, five-sided fully transparent glass windshield. Using a new generation of electromagnetic force sensor, stable performance, small error. The balance has functions such as counting, multi-unit conversion, tare, zero tracking and so on. Fully automatic internal calibration, simple operation. Built-in RS232 or USB interface, you can connect to computers, printers and other equipment.

10mg 6kg 5kg 4kg 3kg 2kg 1kg 600g 0.01g RS232 Gold Scale Digital Industrial Weighing 6kg Commercial Precision Balance

E1 E2 F1 F2 M1 Class 5kg 10kg 20kg 25kg Stainless Steel Reloading Cylindrical Big Weighing Calibration Weights

Place of Origin: Jiangsu China (Mainland)Brand: W&JMaterial: JF-1 stainless steelNominal Value: 1mg-20kgClass: E1, E2, F1Polarization: E1≤2.5μT; E2≤8μT; F1≤25μTSusceptibility: <0.005-0.002Density: 8.0g/cm³Finish: polishingStyle: CylindricalApplication: lab, chemical, medical, commercial and educational use Nominal Value: 1mg-50kgMaterial: 304 stainless steelColor: SilverDensity: 7.9g/cm³Susceptibility: <0.05-0.1Class: F1,F2,M1Polarization: F1≤25μT; F2≤80μT;M1≤250μTFinish: Polishing

Customized School Teaching Lab Tray Balances manufacturers From China | W&J

School Teaching Lab Tray Balances compared with similar products on the market, it has incomparable outstanding advantages in terms of performance, quality, appearance, etc., and enjoys a good reputation in the market.W&J summarizes the defects of past products, and continuously improves them. The specifications of School Teaching Lab Tray Balances can be customized according to your needs.School Teaching Lab Tray BalancesCapacity from 100g to 5000g

Customized 2024 New 0.001g 0.01g Big LCD Digital Weigt Gram Balance Precision Scale manufacturers From China | W&J

Customized Standard Testing Stainless Steel Test Hooked Weights manufacturers From China | W&J

Standard Testing Stainless Steel Test Hooked Weights compared with similar products on the market, it has incomparable outstanding advantages in terms of performance, quality, appearance, etc., and enjoys a good reputation in the market.W&J summarizes the defects of past products, and continuously improves them. The specifications of Standard Testing Stainless Steel Test Hooked Weights can be customized according to your needs.

F2 M1 Class OIML Round Opening Weight Slotted Hooked Weight Set

Material: 304 stainless steelColor: SilverDensity: 7.9g/cm³Susceptibility: <=0.05Class: F2,M1Polarization: F2≤80μT;M1≤250μTFinish: Polishing

0.001g 0.01g 0.1g LED Display Weighing Scale Milligram Balance

Brass Weights

Brass weightsClass F1/F2/M1

Customized Test Weight Sets Calibration Standard Weights Manufacturers From China | W&J

Customized Test Weight Set compared with similar products on the market, it has incomparable outstanding advantages in terms of performance, quality, appearance, etc., and enjoys a good reputation in the market.W&J summarizes the defects of past products, and continuously improves them. The specifications of Customized Test Weight Set can be customized according to your needs.Stainless Steel/Chrome plated/Brass

Why Choose Our Laboratory Instruments?

Our core technical team possesses interdisciplinary capabilities in mechanical design, electronic engineering, and software algorithms, enabling us to provide customized development services including special weighing range customization (such as ultra-micro weighing at the 0.01mg level or large weighing ranges above 10kg), explosion-proof certification (ATEX/IECEx Zone 1/2), integration of specific communication protocols (Modbus RTU, Profinet, 4-20mA analog output), and multilingual localization of the human-machine interface.

At the project execution level, we employ a stage-gate management model. Customers can participate in multiple rounds of technical reviews before the design freeze, and the engineering development phase only begins after the functional specification is confirmed, effectively controlling project change risks and delivery uncertainty.

On the manufacturing side, the company boasts a 3,000-square-meter self-owned production line equipped with fully automated calibration and testing benches and aging test chambers. This allows for flexible switching between small-batch trial orders (5-50 units) and large-scale orders, with a minimum order quantity (MOQ) at the lowest level in the industry.

In terms of after-sales service, customized instruments enjoy the same 24-month warranty commitment as standard products, a 10-year spare parts inventory commitment for key components, and value-added services such as on-site installation and commissioning, operation training, and metrological calibration guidance, ensuring customers receive original manufacturer technical support throughout the entire instrument lifecycle.

Precision Analytical Balance

A high-precision electromagnetic force-compensation weighing system delivering 0.1mg readability with automatic internal calibration, designed for quantitative analysis in regulated pharmaceutical, chemical, and research laboratory environments.

Digital Viscometer

A rotational digital viscometer with broad measurement range (10–6,000,000 mPa·s), featuring optional Peltier temperature control and compliant with FDA 21 CFR Part 11 for electronic data integrity in quality control applications.

Moisture Analyzer

A halogen-heated rapid drying moisture analyzer achieving 0.001g reading precision, equipped with an intelligent endpoint detection algorithm that automatically terminates heating upon sample constant-weight confirmation, suitable for high-throughput QC testing across food, chemical, and pharmaceutical sectors.

Calibration Test Weights

OIML R 111-compliant precision test weights available in E1 through M1 accuracy classes, crafted from non-magnetic austenitic stainless steel with mirror-finish surface treatment, traceable to CIPM mutual recognition arrangements for metrological calibration applications.

Our customized services are underpinned by nearly 30 years of independent R&D and manufacturing experience in precision instruments, building a closed-loop capability encompassing the entire process from capturing customer needs, designing conceptual solutions, verifying functional prototypes, to large-scale mass production and delivery.