Product Description
The METTLER TOLEDO Custom 5 g ASTM Class 1 Knob Weight is a precision calibration accessory designed to complete an ASTM CarePac calibration set. Meeting stringent ASTM E617 Class 1 tolerances, this individually certified knob weight enables comprehensive balance performance testing, including full-range linearity verification, sensitivity analysis, and as a significant mass point in multi-point calibration of analytical and semi-micro balances.

Key Features & Advantages:
Key Mass for Mid-Range Balance Performance Assessment: The 5 g mass is a critical point for evaluating a balance's accuracy and linearity in the mid-range of its capacity, providing valuable data beyond lower gram tests for a complete performance profile.
ASTM Class 1 Precision with High-Quality Stainless Steel: Manufactured from specially selected 316 stainless steel with an adjusting cavity design, polished to a high gloss for corrosion resistance, and featuring low magnetic susceptibility (X ≤ 0.03), ensuring reliable performance in regulated environments.
Durable Knob Design for Long-Term Stability: The knob weight with adjusting cavity offers robust construction and protection, maintaining the weight's calibrated accuracy against environmental factors and ensuring consistent performance over time.
Customizable to Specific Testing and Compliance Needs: Functions as an optional "third weight," enabling laboratories to tailor their calibration set to meet specific balance models, testing protocols, and compliance requirements per ASTM standards.
Advanced Robotic Calibration for Guaranteed Traceability: Each weight is calibrated using state-of-the-art robotic technology and includes an individual certificate, providing the highest level of accuracy and full metrological traceability for accredited and regulated laboratories.

Technical Specifications:
Brand: METTLER TOLEDO
Model: Custom 5 g ASTM Class 1 Knob Weight
Product No. / Material No.: 11123155
Weight: 5 g
Design: Adjusting cavity (Knob weight)
Material: 316 Stainless Steel
Density (ρ): 7950 (± 140) kg/m³
Magnetic Susceptibility (X): ≤ 0.03
Calibration: Supplied with calibration certificate
Storage: Included plastic box
Standard: ASTM E617 Class 1

Ideal For:
Pharmaceutical and chemical research laboratories, analytical testing service providers, calibration facilities adhering to ASTM standards, and any high-precision laboratory that requires a certified, gram-scale weight to perform exhaustive balance qualifications, linearity studies, and routine high-accuracy verification.

Why Choose this Custom 5 g ASTM Weight?
It provides a certified, higher-capacity calibration standard that enables a more robust assessment of your balance's performance across a wider range, ensuring measurement reliability for critical analytical and quality control applications.

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