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Sartorius Proof Line weights are highquality working standards for everyday use.
These weights are made of high quality material with polished or precision-lathed surfaces and comply in all respects with the requirements on shape, material and markings specified by the OIML R111-1 International Recommendation.
OIML class E2 milligram weights are designed as leaf weights. With a nominal mass ranging from 1 mg to 5 mg, these weights are made of aluminum that has a density of 2,650 kg/m3; those with nominal values ranging from 10 mg to 500 mg are manufactured from nickel silver with a density of 8,600 kg/m3. Their tolerances comply with OIML R111-1.
Weights with nominal values of 1 g and higher are available as knob weights and are made of a special stainless steel that has a density of 7,950 kg/m3. Their tolerances comply with OIML R111-1.
Proof Line weights are non-magnetizable and supplied in a high-quality plastic case. These plastic cases are suitable for use in cleanrooms.