Adam Equipment ASTM 0 - 200g Calibration Weight, 200g Capacity, ASTM Class 0, Stainless Steel

Reference-Level ASTM Class 0 Calibration Weight — ASTM 0 - 200g (200 g)

The Adam Equipment ASTM 0 - 200g is an individual 200 g calibration weight conforming to ANSI/ASTM Class 0 tolerances — the highest accuracy classification in the ASTM weight hierarchy. Designed to verify analytical balances as well as high-resolution precision instruments, it provides a traceable mass standard suitable for the most demanding laboratory calibration requirements. Its polished stainless steel body and protective hard case make it a durable, reliable reference for both routine and audit-level calibration tasks.

Key Features

• Polished stainless steel construction engineered to ANSI/ASTM Class 0 tolerance specifications
• 7.96 g/cm³ steel density minimises air-buoyancy correction errors on high-resolution balances
• Individually serialised weight with serial number clearly recorded on the included case
• Impact-resistant hard plastic case protects the weight during storage and transport
• Available across ASTM Classes 0–4 and multiple weight values to meet varied calibration needs
• Meets ANSI/ASTM E617 requirements for Class 0 calibration weights
• Smooth surface finish simplifies inspection for contamination or handling marks

Detailed Overview

The ASTM Class 0 designation represents the tightest set of tolerance limits defined by ANSI/ASTM E617 for laboratory calibration weights. At 200 g, this weight is precision-machined and polished to meet those exacting specifications, making it appropriate for use with analytical balances that operate at sub-milligram readability, as well as precision balances serving reference or inter-laboratory roles. The 7.96 g/cm³ steel density — shared with Class 1 — is chosen specifically to reduce the impact of air-buoyancy variation on measured mass values, a critical consideration in any high-precision measurement environment.

Each weight is individually serialised, with the serial number legibly recorded on the exterior of the supplied impact-resistant plastic case. This makes it straightforward to maintain traceability records for ISO 17025, GLP, GMP, and other compliance frameworks that require documented calibration chains. The hard case prevents physical damage from knocks or drops during storage and bench-to-bench transfer, helping to preserve the dimensional integrity of the weight's critical surfaces over its service life.

Proper handling of Class 0 weights requires the use of clean forceps or lint-free gloves, as direct hand contact can deposit oils and particles that affect measured mass. The mirror-polished finish of this weight makes contamination easy to detect visually and straightforward to remove with appropriate cleaning procedures. Adam Equipment manufactures this weight series across Classes 0 through 4 and across a range of nominal values, allowing laboratories to select the appropriate class and size for each balance or application in their facility.

Applications

• Calibrating and verifying analytical balances in pharmaceutical research and quality laboratories
• Reference mass standards for metrology labs and calibration service providers
• Balance verification during regulatory inspections and third-party audits
• Inter-laboratory mass comparisons where tightest tolerances are required
• Calibration of precision instruments used in chemical, forensic, and materials testing
• Accreditation-support documentation requiring ANSI/ASTM Class 0 traceable weights

Why Choose the Adam Equipment ASTM 0 - 200g?

For laboratories where measurement uncertainty must be held to the absolute minimum, the Adam Equipment ASTM 0 - 200g provides the ANSI/ASTM Class 0 tolerances, traceable serialisation, and robust protective case that rigorous calibration programmes demand. The polished stainless steel body resists corrosion and maintains dimensional stability through thousands of handling cycles, while the 7.96 g/cm³ density specification ensures that air-buoyancy effects remain within acceptable limits. Whether supporting routine analytical balance verification or serving as a reference standard in an accredited metrology laboratory, this weight delivers the precision and reliability expected of the ASTM Class 0 designation.