10 milligram Ulti Mass Class U calibration leaf weight (WT10MGCLSUC), Flat Weight, ASTM Shape, includes Certificate of Calibration and is traceable to National Institute of Standards and Technology (NIST) standards.  Individual weight is packed in a plastic vial and then in bubble envelope.  Typical lead time is 5 to 7 business days from the date order is placed to shipping from NVLAP metrology lab located Arvata, Colorado.

Single-piece construction: Because the precise measurement of density can only be achieved using a single piece weight, all Sartorius weights are ASTM Type 1 single-piece weights.  This weight contain no air cavity or foreign adjusting material, thus providing the maximum mass stability.  In addition, it is an ASTM requirement that one-piece weights are used as standards and where mass stability is required.

This Ulti Mass Class U Mass Standard provide the greatest precision we offer.  Ideal for use as reference standards to calibrate other weights or for calibrating high-resolution micro-balances.  Ideal for use as reference standards to calibrate other weights using high resolution micro balances including the Mettler AX26 Ultra Micro Balance, Mettler Toledo UMX5 Comparator Balance, Sartorius MC21S micro balance, Scientech SM-99, or A&D GH-202 semi micro balance.  Whether you own an Sartorius Micro balance or a Mettler Toledo Comparator we can supply you with high quality calibration weights.

The mass standards produced by Sartorius today are designed to meet or exceed the standards of the American Society of Testing Materials (ASTM E617)

We offer a choice of 21, 17, 16, 9, 8 and 5 piece weight sets or individually weights ranging from 5kg to 1mg.  See the complete offering of calibration weights here.

Sartorius Traceable 10mg Cal Weight