Standard Calibration Weights

Precision Reference Weights for Calibration & Mass Measurement Applications

Althea Solutions introduces the Standard Calibration Weights – E1, E2 & F1, a precision-engineered range of reference weights specifically designed for the calibration and verification of laboratory balances, analytical balances, precision weighing instruments, and reference standards. Manufactured in accordance with OIML R111, these standard weights are produced using high-quality stainless steel with precision fabrication and mirror-polished finishes to ensure excellent dimensional stability and reliable mass calibration performance. The weights are widely used in calibration laboratories, pharmaceutical industries, research laboratories, educational institutions, and quality control laboratories requiring traceable and accurate mass standards.

Available in E1, E2, and F1 accuracy classes, the standard weights are supplied as complete weight sets and individual weights ranging from 1 mg to 20 kg, depending on the selected class. The weights are manufactured using Austenitic Stainless Steel, 316 Stainless Steel, or 304 Stainless Steel, with precision single-piece or one/two-piece construction as specified for each class. NABL calibration certificates are available for E1, E2, and F1 classes at additional cost, making these standard weights suitable for laboratory calibration, reference standards, and precision weighing applications.

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Description

Key Features

OIML R111 Standard

Manufactured in accordance with OIML R111 requirements for precision calibration weights.

Three Accuracy Classes

Available in E1, E2, and F1 classes to suit different calibration and weighing applications.

Precision Stainless Steel Construction

Manufactured using Austenitic Stainless Steel, 316 Stainless Steel, or 304 Stainless Steel according to the selected accuracy class.

Mirror Finished Weights

Precision-finished cylindrical weights provide consistent handling and long-term dimensional stability.

Complete Weight Range

Available as complete weight sets and individual weights from 1 mg to 20 kg, depending on the selected class.

NABL Calibration Support

Calibration certificates from NABL-accredited laboratories are available for E1, E2, and F1 classes at additional cost.

Additional Technical Highlights

Accuracy Classes

Available in E1, E2, and F1 classes for different calibration and verification requirements.

Manufacturing Standard

Designed and manufactured in accordance with OIML R111. Construction: Precision solid single-piece or one/two-piece fabrication depending on the selected class.

Surface Finish

Mirror-polished finish for reliable handling and dimensional consistency.

Weight Availability

Complete weight sets and individual weights available from 1 mg to 20 kg.

Calibration Support

NABL calibration certificates available for certified laboratory calibration.

Standard Accessories

Supplied with aluminium alloy or ABS storage boxes, tweezers, cloth, and gloves as specified for each class.

Applications

Primary Reference Standards:
E1 Class weights are recommended for primary reference standards and calibration of other reference standards.
Analytical & Micro Balance Calibration:
E2 Class weights are suitable for calibrating analytical, micro, and semi-micro balances requiring very high accuracy.
Precision Balance Verification:
F1 Class weights are recommended for calibrating high-precision and top-loading balances with 0.001 g readability.
Laboratory Calibration:
Suitable for routine calibration and verification of precision weighing instruments in laboratories.
Research & Quality Assurance:
Ideal for research laboratories, educational institutions, pharmaceutical laboratories, and quality assurance applications requiring accurate mass measurement.

Accuracy Classes & Technical Specifications

Specification	E1 Class	E2 Class	F1 Class
Standard	OIML R111	OIML R111	OIML R111
Material	Austenitic Stainless Steel	316 Stainless Steel	304 Stainless Steel
Construction	Solid Single-Piece Fabrication	Solid Single-Piece Fabrication	One or Two-Piece Construction
Adjustment Cavity	No Cavity Adjustment	No Cavity Adjustment	May Contain Adjusting Cavity
Density	8.00 g/cm³	7.96 g/cm³	7.90 g/cm³
Magnetic Susceptibility	<0.005	<0.005	<0.005
Intensity of Polarization	<2.5 µT	<8	<25
Shape	Cylindrical with Knob	Cylindrical	Cylindrical with Knob
Finish	Mirror Polish	Mirror Polish	Mirror Polish
Packing (Weight Sets)	Aluminium Alloy Box	Aluminium Alloy Box	Aluminium Alloy Box
Packing (Individual Weights)	ABS Box	ABS Box	ABS Box

Standard Accessories:

Aluminium Alloy Storage Box (Weight Sets)
ABS Storage Box (Individual Weights)
Tweezers
Cleaning Cloth (E1 & E2 Weight Sets)
Protective Gloves (E1 & E2 Weight Sets)

Available Weight Range

Accuracy Class	Available Weight Range
E1	Individual weights from 1 mg to 20 kg and standard weight sets
E2	Individual weights from 1 mg to 20 kg and standard weight sets
F1	Individual weights from 1 mg to 20 kg and standard weight sets

Note: Weight sets and individual weight combinations vary according to the selected accuracy class. NABL calibration certificates are available for E1 and E2 classes with 3-year validity and for the F1 class with 2-year validity, at additional cost.

Trusted Performance, Certified Quality

Althea Solutions’ Standard Calibration Weights (E1, E2 & F1) are manufactured in accordance with OIML R111 requirements to provide reliable and traceable mass calibration for laboratory, industrial, and research applications. Designed for precision weighing and calibration, they deliver consistent measurement accuracy and dependable performance for critical mass measurement applications

Why Choose Althea Solutions' Standard Calibration Weights?

1. Precision Calibration: Manufactured in accordance with OIML R111 for reliable mass calibration and verification.
2. Multiple Accuracy Classes: Available in E1, E2, and F1 classes to meet different laboratory calibration requirements.
3. High-Quality Construction: Manufactured using premium stainless steel with precision fabrication and mirror finish.
4. Comprehensive Weight Range: Complete weight sets and individual weights available from 1 mg to 20 kg.
5. Traceable Calibration: NABL calibration certificates available for applications requiring certified mass standards.
6. Professional Storage: Supplied in durable aluminium alloy and ABS storage boxes for safe handling and protection.