5 milligram leaf weight calibrated by a NVLAP Lab. Precision Weighing Balances is your direct source to high precision calibration weights for micro balances, mass comparators, and analytical balances.  Whether you own a Micro balance or a Mettler Toledo Comparator we can supply you with high quality calibration weights.

This Class 1 calibration leaf weight (PWB7034-1W), Flat Weight, includes NVLAP Certificate of Calibration.  Individual weight is packed in a plastic vial and then in bubble envelope.  Typical lead time is 7 to 10 business days from the date order is placed to shipping from NVLAP metrology lab.

Single-piece construction, with no adjusting cavity with one end turned up for easy handling and made of flat aluminum.

This Class 1 Mass Standard provides the greatest precision we offer.  Ideal for use as reference standards to calibrate other weights or for calibrating high-resolution micro-balances including Scientech SM-99 or A&D GH-202 semi micro balance. 

Weights not supplied with case. Case available upon request for an additional cost.

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.