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The W1105-22-200 is the largest M1-grade calibration weight set with sub-milligram coverage — 22-piece set covering 1 mg to 200 g range. The lower-cost M1 alternative ($221) to the F1-grade W1100-200 set ($618) when sub-milligram coverage with extended-mass range is needed but F1 tolerance is over-engineered.
For complete OIML M1 grade selection rationale, see the W1105-8-50 parent page.
| SKU | W1105-22-200 |
| Type | Class M1 calibration weight set, 22 pieces (with sub-milligram coverage) |
| Mass range | 1 mg to 200 g |
| Accuracy class | M1 (OIML standard) |
| Compatible balance grades | Standard / industrial balances (10 mg readability+) requiring sub-milligram and extended-mass calibration coverage |
| Set composition (typical 22-piece M1 1mg-200g set) | 1 mg through 100 mg sub-milligram values + 1 g through 200 g full mass-range coverage |
| Companion accessory | W1000-TF Tweezers ($42) |
| F1-grade alternative | W1100-200 (23-piece F1 set, 1 mg – 200 g, $618 — for analytical balance calibration) |
| List price | $221 |
| SKU | Pieces | Mass range | List price |
| W1105-8-50 | 8 | 1 g – 50 g | $221.00 |
| W1105-12-500 | 12 | 1 g – 500 g | $272 |
| W1105-13-1000 | 13 | 1 g – 1000 g | $339 |
| W1105-21-100 | 21 | 1 mg – 100 g (sub-mg coverage) | $184 |
| W1105-22-200 (this product) | 22 | 1 mg – 200 g (sub-mg coverage) | $221 |
The W1105-22-200 (M1) and W1100-200 (F1) cover the same mass range (1 mg – 200 g) — the choice is purely OIML grade:
| Set | Grade | Pieces | List price | Best for |
| W1105-22-200 (this product) | M1 (standard precision) | 22 pieces | $221 | Standard / industrial balance calibration; budget-tier; non-regulated labs |
| W1100-200 | F1 (high precision) | 23 pieces | $618 | Analytical balance calibration; regulated labs (FDA / GLP / ISO 17025) |
Cost differential: $397 ($618 − $221). M1 grade is 2.8× cheaper for the same mass-range coverage when the workflow doesn't require F1 tolerance.
Comprehensive standard / industrial balance calibration — workflows requiring multi-point calibration coverage from sub-milligram through 200 g range on standard balances.
Educational analytical chemistry programs — graduate / undergraduate analytical chemistry programs introducing OIML calibration concepts at the cost-optimized M1 grade.
Cost-optimized non-regulated labs — labs benefiting from comprehensive coverage (1 mg – 200 g) at the M1 cost tier rather than F1 premium.
Method-development workflows — protocol-development workflows requiring sub-milligram-to-mid-mass calibration verification.
Multi-balance facility procurement — facilities running multiple standard / industrial balances benefit from comprehensive M1 set procurement.
Pair with W1000-TF tweezers.
Confirm case / storage. 22-piece sets ship with protective case + weight-position cutouts.
Confirm at quote: balance grade and capacity, M1 vs F1 grade decision, comprehensive vs partial-range coverage need, case inclusion, and lead time.
Warranty: Per Accuris standard accessory terms — confirm at quote.
Accuris W1105 M1 Grade Calibration Weight Set family (see table above for full set-size ladder).
Pick the W1105-22-200 M1 set for comprehensive standard / industrial balance calibration with sub-milligram coverage; step to W1100-200 F1 set for analytical / regulated balance calibration.
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