Specifications include, but are not limited to: provide calibration and certification of lab balances and centrifuges; Services must include all functional and calibration tests as well as adjustment to manufacturer or IBL tolerances/settings using standards traceable to the National Institute of Standards and Technology (NIST); .1 Mettler PR503 balance serial #1122170093. 2.2 Fisher Accu-224 balance, serial #18206033. 2.3 Fisher ALF2002 balance, serial #B203628166P. 2.4 Mettler AB104 balance, serial #1113461307. 2.5 Denver PI-225D balance, serial #18509672. 2.6 Fisher Accu-224 balance, serial #F224014005. 2.7 Ohaus SP402 balance, serial #B209745169. 2.8 Mettler ML802E balance, serial #B348040986. 2.9 Mettler AE163 balance, serial #D366669. 2.10 Acculab Accu2202 balance, serial #F2202113017.