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Test weights

  • How you find the right test weight for your balance: a balance can never be more accurate than the test weight used to adjust it, it all depends on its tolerance.
  • Accuracy of the test weight: Should correspond to the readout [d] of the balance, or rather be better.
  • Nominal weight value: This is shown in adjust mode “CAL” in the balance display. Given a choice, the heaviest weight is the most suitable for accurate measurement.
  • Once accuracy and nominal weight value are specified, the suitable test weight is selected according to the tolerances “Tol” of the individual accuracy classes E2 – M3, see column “Tol ± mg” at the respective weight and table bellow

From brass to stainless steel - the right test weight for every situation

Test weight
Cylindrical shape with lifting knob, polished stainless steel
Compact shape with carrying grip, polished stainless steel
Cylindrical shape with lifting knob, polished stainless steel or nickelplated and polished brass
Compact shape with carrying grip, finely turned stainless steel
Cylindrical shape with lifting knob, finely turned stainless steel
Cylindrical shape with lifting knob, finely turned brass
Features
Conforms to OIML:R111
yes
yes
yes
no
yes
yes
Available classes
E1, E2
E2, F1
F1
adjusted to F1 error limit class
F2, M1
M1, M2, M3
Upper surface
polished
polished
polished
finely turned
finely turned
finely turned
Material
Stainless steel
Stainless steel
Stainless steel or nickel-plated brass
Stainless steel
Stainless steel
Brass
Adjusting cavity
no
no
yes
yes, from 20 g
yes, from 20 g
yes, from 20 g
Marking (Milligram weights, generally none)
no
E2: None
F1: Nominal value, etched
Nominal value, etched
Nominal value, etched
F2: Class + nominal value, etched;
M1: Class + nominal value, adopted
Class + nominal value, adopted
Verification possible
yes
yes
yes
no
yes
yes, M1 only
Checking equipment for verification purposes
approved
approved
approved
not approved
approved
approved, M1 only
Ideal as checking equipment in QM systems (e.g. ISO 9000 ff)
yes
yes
yes
yes
yes
yes
Benefits
  • High-quality test weight for analytical and precision balances
  • Highly-refined surface
  • Ideal shape of the top for good grip
  • Affordable test weight for analytical and precision balances
  • Highly refined surface
  • Ideal, high-quality test weight for precision balances
  • Ideal shape of the top for good grip
Affordable test weight for in-house checking of precision balances
  • Ideal test weight for commercial and industrial scales
  • Ideal shape of the top for good grip
  • Affordable test weight for commer­cial and industrial scales
  • Ideal shape of the top for good grip




Mistake (tolerance) on weight according to OIML R 111
Weight
E1
E2
F1
F2
M1
M2
M3
1 mg
±0.003mg
±0.006mg
±0.020mg
±0.06mg
±0.20mg


2 mg
±0.003mg
±0.006mg
±0.020mg
±0.06mg
±0.20mg


5 mg
±0.003mg
±0.006mg
±0.020mg
±0.06mg
±0.20mg


10 mg
±0.003mg
±0.008mg
±0.025mg
±0.08mg
±0.25mg


20 mg
±0.003mg
±0.010mg
±0.03mg
±0.10mg
±0.3mg


50 mg
±0.004mg
±0.012mg
±0.04mg
±0.12mg
±0.4mg


100 mg
±0.005mg
±0.016mg
±0.05mg
±0.16mg
±0.5mg
±1.6mg

200 mg
±0.006mg
±0.020mg
±0.06mg
±0.20mg
±0.6mg
±2.0mg

500 mg
±0.008mg
±0.025mg
±0.08mg
±0.25mg
±0.8mg
±2.5mg

1 g
±0.010mg
±0.03mg
±0.10mg
±0.3mg
±1.0mg
±3.0mg
±10mg
2 g
±0.012mg
±0.04mg
±0.12mg
±0.4mg
±1.2mg
±4.0mg
±12mg
5 g
±0.016mg
±0.05mg
±0.16mg
±0.5mg
±1.6mg
±5.0mg
±16mg
10 g
±0.020mg
±0.06mg
±0.20mg
±0.6mg
±2.0mg
±6.0mg
±20mg
20 g
±0.025mg
±0.08mg
±0.25mg
±0.8mg
±2.5mg
±8.0mg
±25mg
50 g
±0.03mg
±0.10mg
±0.3mg
±1.0mg
±3.0mg
±10mg
±30mg
100 g
±0.05mg
±0.16mg
±0.5mg
±1.6mg
±5.0mg
±16mg
±50mg
200 g
±0.10 mg
±0.3mg
±1.0mg
±3.0mg
±10mg
±30mg
±100mg
500 g
±0.25mg
±0.8mg
±2.5mg
±8.0mg
±25mg
±80mg
±250mg
1 kg
±0.5mg
±1.6mg
±5.0mg
±16mg
±50mg
±160mg
±500mg
2 kg
±1.0mg
±3.0mg
±10mg
±30mg
±100mg
±300mg
±1,0g
5 kg
±2.5mg
±8.0mg
±25mg
±80mg
±250mg
±800mg
±2,5g
10 kg
±5.0mg
±16mg
±50mg
±160mg
±500mg
±1,6g
±5,0g
20 kg
±10mg
±30mg
±100mg
±300mg
±1,0g
±3,0g
±10g
50 kg
±25mg
±80mg
±250mg
±800mg
±2,5g
±8,0g
±25g
100 kg

±160mg
±500mg
±1,6g
±5,0g
±16g
±50g
200 kg

±300mg
±1,0g
±3,0g
±10g
±30g
±100g
500 kg

±800mg
±2,5g
±8,0g
±25g
±80g
±250g
1000 kg

±1600mg
±5,0g
±16g
±50g
±160g
±500g
2000 kg


±10g
±30g
±100g
±300g
±1,0kg
5000 kg


±25g
±80g
±250g
±800g
±2,5kg