Adam Equipment ASTM 1 - 1g Calibration Weight, 1g Capacity, ASTM Class 1, Stainless Steel

Adam Equipment ASTM 1 Individual Calibration Weight, 1 g High-Accuracy Stainless Steel

The Adam Equipment ASTM 1 1 g calibration weight is a high-accuracy individual stainless steel weight conforming to ASTM Class 1 tolerances. Positioned near the top of the ASTM weight accuracy hierarchy, it provides the close-tolerance calibration reference required by precision and analytical balances in demanding laboratory and pharmaceutical measurement environments where tight tolerance limits are specified by the calibration protocol.

Key Features

• 1 g nominal value for calibrating high-resolution analytical and precision balances at small denominations
• ASTM Class 1 conformance meeting the tighter ANSI/ASTM tolerance limits of this class
• 7.96 g/cm³ density as specified for ASTM Class 0-1 weights, reflecting higher material standards
• Polished stainless steel surface finish minimises contamination accumulation on the weight body
• Available across the full ASTM class range (0-4) for complete matched calibration sets
• Backed by a 1-year warranty

Detailed Overview

ASTM Class 1 weights sit near the top of the ASTM accuracy scale, with tolerances tighter than Classes 2, 3, and 4, making them appropriate for precision balances with readabilities from 0.1 mg to 1 mg. The 1 g denomination is one of the most frequently used small calibration references — it falls within the working range of most analytical balances and is regularly employed for span calibration, sensitivity checks, and low-end linearity verification across a wide variety of precision instruments.

The 7.96 g/cm³ density specification for ASTM Class 0-1 weights reflects a higher level of material consistency compared to the 7.9 g/cm³ specification for Classes 2-4. This tighter density specification, combined with the polished surface finish, ensures that the weight's effective mass remains stable across many calibration cycles. While the ASTM 1 individual weights at this denomination do not include an individual plastic case per the available product data, their polished construction provides inherent surface protection, and they are available as part of the broader Adam Equipment ASTM weight programme that supports full class flexibility.

Applications

• Span and sensitivity calibration of analytical balances in research and quality laboratories
• Pharmaceutical quality control and reference measurement with Class 1 requirements
• Linearity and repeatability testing of precision instruments at small denominations
• Accredited calibration services requiring ANSI/ASTM Class 1 reference standards

Why Choose the Adam Equipment ASTM 1 - 1g?

The 1 g ASTM 1 weight provides a well-defined, ANSI/ASTM-compliant calibration reference for analytical balance users who need a higher-accuracy standard at this denomination than Class 2 provides. Its polished stainless steel construction and elevated density specification ensure mass stability over time, and its availability across the full ASTM class range supports the assembly of matched multi-denomination calibration weight collections for diverse balance fleets.