procurement of certified reference materials and standards - 2, 4-dde with purity of 99% npack size: 50 mg 3 2, 4 - ddd with purity of 99% npack size: 100 mg 4 bifenazate with purity of 99% npack size: 50 mg 5 beflubutamid with purity of 99% npack size: 100 mg 6 captafol with purity of 99% npack size: 250 mg 7 carfentrazole with purity of 98.2% npack size: 10 mg 8 chlorimuron ethyl with purity of 99% npack size: 100 mg 9 chlorpyrifos with purity of 99.5% npack size: 250 mg 10 cyproconazole with purity of 98.5% npack size: 100 mg 11 difenoconazole with purity of 99.5% npack size: 250 mg 12 dimefluthrin with purity of 97.7% npack size: 100 mg 13 endosulfan sulfate with purity of 98.17% npack size: 100 mg 14 fluxapyroxad with purity of 99.8% npack size: 100 mg 15 gibberellic acid with purity of 91.6% npack size: 100 mg 16 malaxon with purity of 98.9% npack size: 100 mg 17 mepiquat chloride with purity of 99.2% npack size: 100 mg 18 metaflumizone with purity of 97.2% npack size: 100 mg 19 methamidofos with purity of 98.6% npack size: 100 mg 20 nitempyram with purity of 98.8% npack size: 100 mg 21 omethoate with purity of 93.4% npack size: 100 mg 22 orthosulfamuron with purity of 97.9% npack size: 50 mg 23 paclobutrazole with purity of 99.6% npack size: 100 mg 24 penconazole with purity of 98.85% npack size: 100 mg 25 phenthoate with purity of 93.43% npack size: 100 mg 26 pirimifos methyl with purity of 95.5% npack size: 250 mg 27 procymidone with purity of 99.64% npack size: 250 mg 28 profenofos with purity of 95.8% npack size: 250 mg 29 propatamphos with purity of 93.45% npack size: 100 mg 30 propoxur with purity of 99.9% npack size: 250 mg 31 quizalfop-ethyl with purity of 97.93% npack size: 50 mg 32 spirodiclofen with purity of 98.98% npack size: 100 mg 33 temephos with purity of 98.69% npack size: 100 mg 34 thiafluzamide with purity of 99.16% npack size: 100 mg 35 thiodicarb with purity of 97.38% npack size: 100 mg 36 tembofrion with purity of 97.95% npack size: 100 mg 37 tebufenpyrad with purity of 99.9% npack size: 100 mg 38 tolfenpyrad with purity of 94.4% npack size: 100 mg 39 triademefon with purity of 98.72% npack size: 250 mg 40 trifloxystrobin with purity of 99.3% npack size: 100 mg 41 clp element standard kit with specification of 1000 mg / ml npack size: 100 ml 42 tin standard with specification of 1000 mg / ml npack size: 100 ml 43 sodium chloride with specification of nist traceable npack size: 100 g 44 potassium iodate with specification of nist traceable npack size: 100 g 45 potassium hydrogen phthalate with specification of nist traceable npack size: 100 g 46 sodium carbonate with specification of nist traceable npack size: 100 g 47 potassium dichromate with specification of nist traceable npack size: 100 g 48 certified reference buffer solution potassium hydrogen phthalate, ndirectly traceable to primary srm from nist / ptb ph ( s ) = 4.005 with specification of nist traceable npack size: 500 ml 49 buffer solution ( di-sodium tetraborate ) , ntraceable to srm from nist and ptb ph 9.22 ( 20°c ) with specification of nist traceable npack size: 500 ml 50 buffer solution ( di-sodium hydrogen nphosphate / potassium dihydrogen nphosphate ) , traceable to srm from nist nand ptb ph 7.00 ( 20°c ) with specification of nist traceable npack size: 500 ml 51 holmium oxide solution, 40 g / l in perchloric acid, 10% ( v / v ) ) with specification of nist traceable npack size: 10 ml 52 di butyl sulphide in mineral oil for flashpoint test with specification of crm npack size: 25 ml