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In precise scientific and industrial settings, the accuracy of measurements is paramount. Selecting the appropriate lab weights is crucial for ensuring the reliability and validity of your experiments, calibrations, and quality control processes. The right weights minimize measurement uncertainty, directly impacting the integrity of your data and the success of your work.
ACCURATE WEIGHT DETERMINATION: Features a ±2% accuracy tolerance for reliable measurements. Ideal for studying pressure, force, and torque in scientific settings or verifying balance scales.
CORROSION RESISTANT CONSTRUCTION: Manufactured from solid steel with a chromium-plated finish to prevent rust and oxidation. The smooth surface ensures long-term use in laboratory environments.
SECURE SLOTTED DESIGN: Each 100g mass includes a precision-cut slot to sit securely on the hanger. The wide base plate on the hanger prevents weights from slipping during force experiments.
MULTIPURPOSE EDUCATIONAL TOOL: Essential for physics classrooms and home schooling. Perfect for demonstrating mechanical principles, gravity, and balance laws through hands-on learning.
COMPLETE 1000G WEIGHT KIT: Package includes nine 100g slotted weights and one 100g hanger for a 1kg total mass. Precisely engineered components fit together seamlessly for immediate lab use.
DOUBLE HOOKED WEIGHT SET: 8-piece lab weight set, 200 g (0.44 lb) each; dual-end hooks let you connect, hang, and stack loads for force, tension, and motion demonstrations.
CONSISTENT HANDLING: Solid chrome metal body (approx. 30 x 35 mm) with smooth plated surface—easy to wipe clean and simple to grip, helping keep repeated trials organized in busy lab sessions.
PHYSICS LAB SCENARIOS: Built for pulley systems, tension tests, motion experiments, and general science laboratory work; adjust mass in clear steps by adding pieces instead of swapping bulky weights.
STACKABLE DUAL HOOK DESIGN: Hooks on both ends support quick linking to strings, springs, and hangers; connect multiple weights in series to reach your target load for demonstrations and bench setups.
STORAGE & SETUP TIPS: Includes 2 storage cases to keep weights separated; before each run, confirm hooks are fully seated and your stand/cord is rated for the combined load to reduce slips during testing.
WEIGH SCALES CALIBRATION: 7 PCS of calibration weights include 1g, 2g, 5g, 10g, 20g, 50g, 100g, a total of 188 grams. Various scales for precise measuring. Enough quantity for your use.
HIGH-QUALITY: Our Calibration Weights use steel chrome plating manufacturing process, the workmanship is fine. Super mirror polished, smooth and corrosion-resistant.
ACCURATE MEASUREMENT: These small weights are useful to test the accuracy of scales, keeping your scale calibrated. Making your experiment more effective.
WIDE RANGE OF USE: Our scale calibration weights suit for general laboratory, commercial, educational use. Such as digital pocket scale, jewelry carat scale, diamond scale, precision balance test.
WHAT YOU GET: 1g*1, 2g*1, 5g*1, 10g*1, 20g*1, 50g*1, 100g*1, our 7*24 friendly customer service for peace of mind.
8PCS Calibration Weights: The calibration weight set contains 8pcs different weights, including 10g*1, 20g*2, 50g*1, 100g*2, 200g*1, 500g*1, total 1000g. Attached plastic tweezers make it easy to select different weights.
Precision Calibration Weight Set: Rigorously tested OIML Class M1 calibration weight set made of stainless steel with chrome-plated manufacturing process and mirror-polished surfaces for accuracy, corrosion resistance and high finish.
Triple Protection Packaging: White cardboard wrapped weight box prevents calibration weights from being damaged during transportation, and the double layer of foam built into the box protects the calibration weights and reduces impact noise.
Multiple Application Scenarios: Scale calibration weights suitable for laboratory, industrial, commercial and other uses. Easily applied to digital scale, pocket scale, jewelry scale, food scale, milligram scale and precision balance etc.
Customer Support Service: QP 1000 gram calibration weights set provides friendly service team to solve any questions you may have about the product.
500 GRAM SET || Includes 9 weights and one hanger, each weighing 50g. Total weight of set is 500g
INCLUDES HANGER || Stainless steel hanger with hook end for suspending masses in force experiments
GREAT FOR PHYSICS STUDIES || Masses can be used for studying pressure, strength, torque in the classroom or lab
IDEAL FOR CALIBRATION || Masses can be used for calibrating scales & balances
INDUSTRIAL QUALITY || Eisco Labs proudly manufactures its own products using state-of-the-art equipment, following the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers...
Sci-Supply is an American small business based in Southwest Ohio and has been proudly serving our customers since 2004. Get high quality products and exceptional customer care while supporting a small American business. We go the extra mile for YOU!
Includes 9 Individual Hook Weights Ranging from 10g to 1,000g in Size
Weights Included: One 10g Weight, Two 20g Weights, One 50g Weight, One 100g Weight, Two 200g Weights, One 500g Weight, and One 1,000g Weight
Lower Hook Receivers For Stacking Weights (See Alternate Photos)
Last update on 2026-09-06 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Lab Weights
Accuracy Class and Tolerance
The most critical factor in selecting weights is their accuracy class, which dictates the permissible error and tolerance. Standards like OIML R111 (E0, E1, E2, F1, F2, M1, M2, M3) and ASTM (Classes 0-7) define these specifications. For high-precision analytical balances, E1 or E2 class weights are often required, while less sensitive applications might suffice with F1 or M1 classes. Always match the weight's accuracy to the balance being calibrated or tested and the precision needed for your application. Using weights with insufficient accuracy can lead to significant measurement errors and unreliable results.
Material and Construction
The material of the weights directly impacts their stability, durability, and resistance to environmental factors.
Stainless Steel: The most common and recommended material due to its excellent corrosion resistance, low magnetic susceptibility, and long-term stability. High-grade stainless steel ensures minimal wear and tear over time.
Construction: Look for weights that are seamlessly constructed or have a polished finish to prevent the accumulation of contaminants and facilitate easy cleaning. Weights with a well-sealed adjustment cavity are also preferred to maintain their integrity.
These aspects are crucial for maintaining the mass standard over time and in various laboratory environments.
Calibration and Certification
Regular calibration and proper certification are essential for ensuring the ongoing accuracy of your weights.
NIST Traceability: Ensure weights come with a certificate of calibration traceable to national standards like NIST (National Institute of Standards and Technology). This traceability provides confidence in the accuracy of the weights.
Recalibration: Establish a recalibration schedule based on your application's requirements and usage frequency. Professional recalibration services help maintain the integrity of your measurement system and comply with quality standards.
A robust calibration program extends the lifespan and reliability of your weight set.
Frequently Asked Questions
What are the different accuracy classes for lab weights?
Accuracy classes, like OIML R111 (E0, E1, E2, F1, F2, M1, M2, M3) or ASTM (Classes 0-7), define the tolerance and permissible error of a weight. Higher classes (e.g., E1, Class 0) offer greater precision, essential for highly sensitive measurements.
Why is material important for lab weights?
The material, typically stainless steel, affects a weight's stability, corrosion resistance, and magnetic properties. High-quality materials ensure long-term accuracy and minimize interaction with sensitive instruments.
How often should lab weights be calibrated?
Calibration frequency depends on usage, environmental conditions, and regulatory requirements. For critical applications, annual or semi-annual calibration is often recommended to maintain measurement integrity.
What's the difference between calibration weights and test weights?
Calibration weights are used to adjust or calibrate a balance to a known standard, ensuring its accuracy across its full range. Test weights are primarily used for routine checks and verification of a balance's performance between calibrations.
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