

OIML Calibration Weight Sets M1 Capacity upto 1mg to 1g
- OIML M1 calibration weight set for routine balance checking
- Nominal capacity range from 1 mg to 1 g
- Suitable for low-mass balance verification workflows
- Supports routine calibration reference and weighing checks
- Useful for teaching, QC, research and laboratory weighing areas
- Designed for use with analytical and precision balances (within M1 suitability range)
- Helps verify repeatability, linearity and short-term balance performance
- Confirm certificate, material, case and full weight composition before purchase
- Handle with suitable forceps or gloves to reduce contamination risk
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- Description
Description
The OIML M1 Calibration Weight Sets, also known as laboratory balance calibration weight sets, are designed for routine balance checking, weighing verification and mass reference use in compatible laboratory environments. These sets provide a practical and reliable solution for maintaining weighing accuracy across a wide range of laboratory applications.
These M1 class weight sets are available in multiple capacity ranges, starting from low-mass sets such as 1 mg to 500 mg through to larger sets up to 1 mg to 10 kg. This flexibility allows laboratories to select a configuration that best matches their balance capacity, readability and internal quality control requirements. Whether used for microgram-level checks or higher-capacity weighing verification, the range supports diverse operational needs.
The OIML M1 class is suitable for general laboratory, educational and quality control workflows where practical reference weights are required for routine balance checks. While not intended for high-precision calibration laboratories, M1 weights are widely used for internal verification procedures, training environments and routine performance monitoring. Users should ensure that the selected class aligns with their balance specifications and compliance requirements.
These calibration weight sets support routine checks such as balance response, repeatability, linearity assessment and short-term weighing stability. They are commonly used before daily sample weighing, during scheduled equipment checks, in classroom demonstrations, and as part of internal laboratory quality assurance programs. Regular use helps identify drift or performance issues in weighing instruments before they affect analytical results.
Correct handling is essential to preserve the integrity and longevity of calibration weights. Users should avoid direct contact with bare hands, as oils, moisture and particulates can affect mass stability over time. Instead, appropriate forceps, tweezers or gloves should be used when handling individual weights. After use, weights should be returned to their designated slots in the storage case to prevent damage or contamination.
Users should also consider environmental conditions when using calibration weights. Temperature fluctuations, humidity and airborne contaminants can influence both the weights and the balance performance. For best results, weights should be used in a stable laboratory environment and allowed to equilibrate to room conditions before use.
Before purchase, users should confirm the selected weight range, full set composition, material type (such as stainless steel or coated finishes), storage case design and certificate requirements. Some applications may require traceable calibration certificates or additional documentation depending on internal quality systems or regulatory standards.
LabChoice Australia supplies OIML M1 Calibration Weight Sets for school laboratories, university teaching spaces, QC laboratories, research facilities, industrial laboratories and routine weighing workspaces requiring practical reference weights for compatible balance checking workflows. These sets are widely used across scientific, manufacturing and educational environments where dependable routine verification is required.
| Item Code | Capacity / Range | Readability | Material |
|---|---|---|---|
| LC-28-OCWSM1 | 1 mg – 500 mg | 1 mg | Stainless Steel |
| LC-28-OCWSM2 | 1 mg – 100 g | 1 mg | Stainless Steel |
| LC-28-OCWSM3 | 1 mg – 200 g | 1 mg | Stainless Steel |
| LC-28-OCWSM4 | 1 mg – 500 g | 1 mg | Stainless Steel |
| LC-28-OCWSM5 | 1 mg – 1 kg | 1 mg | Stainless Steel |
| LC-28-OCWSM6 | 1 mg – 2 kg | 1 mg | Stainless Steel |
| LC-28-OCWSM7 | 1 mg – 5 kg | 1 mg | Stainless Steel |
| LC-28-OCWSM8 | 1 mg – 10 kg | 1 mg | Stainless Steel |
| LC-28-OCWSM9 | 1 g – 100 g | 1 g | Stainless Steel |
| LC-28-OCWSM10 | 1 g – 200 g | 1 g | Stainless Steel |
| LC-28-OCWSM11 | 1 g – 500 g | 1 g | Stainless Steel |
| LC-28-OCWSM12 | 1 g – 2 kg | 1 g | Stainless Steel |
| LC-28-OCWSM13 | 1 g – 5 kg | 1 g | Stainless Steel |
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What Our Customers Say
Emma Roberts
9 months ago
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We ordered a set of customised BORO 3.3 borosilicate glassware for our teaching labs, and LabChoice Australia exceeded every expectation. From the first consultation to final delivery, their team listened carefully, offered expert advice, and ensured every piece matched our specifications perfectly.
The clarity and precision of the glassware are exceptional, and the quick turnaround made setup effortless. It’s refreshing to work with an Australian supplier who genuinely understands laboratory needs and takes pride in quality craftsmanship. We’ll definitely be returning to LabChoice for future glassware requirements
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10 months ago
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Our lab required high-precision BORO 3.3 glassware for analytical testing, and LabChoice Australia delivered outstanding results. The ordering process was simple, communication was clear, and every beaker and flask arrived perfectly calibrated and ready for use.
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12 months ago
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We needed a set of customised borosilicate glassware for a specialised project, and LabChoice Australia delivered exactly what we envisioned. The team worked closely with us from design to production, ensuring every detail met our specifications. The craftsmanship is exceptional, and the turnaround time was impressive. It’s reassuring to know we can rely on them for unique, made-to-order pieces
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1 year ago
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LabChoice Australia has completely changed the way we source our lab glassware. The quality is consistently top-notch, and every piece meets the precision we need for reliable results. Their team knows their stuff, answers our questions quickly, and always goes the extra mile to help — they’re more like partners than just a supplier.
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1 year ago
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We trust LabChoice Australia because they deliver every time. Their borosilicate glassware is durable, accurate, and perfect for the high-heat work we do. Everything arrives well-packed with clear specs, so there are never surprises. It’s reassuring to deal with a supplier who understands both compliance and the demands of a busy lab




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