| B532 | n-辛基-b-D-吡喃葡萄糖苷，N-Octyl-b-D-Glucopyranoside | 1g 原装 | 680 | Amresco J575 |
| B533 | NutrientAgar(营养琼脂) | 100g原装/500g原装 | 370/910 | BD 212000 |
| B534 | NutrientBroth(营养肉汤) | 100g/500g/北京250g | 450/1180/100 | BD 233000 |
| B535 | Nystatin(Mycostatin)(制霉菌素) | 100mg原装/1g原装 | 120/880 | INALCO1758-9323 |
| B540 | OilRedO(油红O（苏丹红5B）) | 25g/50g/250g原装 | 130/210/880 | Amresco 0684 |
| B541 | OPD(邻苯二胺) | 5g/10g/50g/250g原装 | 70/110/280/1300 | Amresco 0688 |
| B542 | Paclobutrazol(多效唑) | 10g/250g | 60/280 | 国产 |
| B543 | PalcamMediumBase | 500g原装 | 1510 | BD 263620 |
| B544 | Palmiticacid(棕榈酸) | 10g原装/25g原装 | 520/1050 | Sigma P0500 |
| B545 | Papain(木瓜蛋白酶) | 5g/25g/100g原装 | 200/820/2750 | Sigma P3250 |
| B546 | Paraformaldehyde(多聚甲醛) | 100g/250g/1kg/5kg原装 | 60/100/260/1080 | Sigma P6148 |
| B547 | Pectin(果胶) | 25g/100g/500g/1kg原装 | 110/390/1850/3450 | Sigma P9135 |
| B548 | PectolaseY-23(果胶酶Y-23) | 100mg/500mg/1g/10g原装 | 160/750/1180/9800 | Yakult.JAPAN |
| B549 | PEG12000(聚乙二醇12000) | 100g /1kg 原装 | 110/770 | Fluka 81285 |
| B550 | PEG20000(聚乙二醇20000) | 250g/500g/1kg/5kg 原装 | 100/180/330/1300 | Merck 818897 |
| B551 | PEG3350(聚乙二醇3350) | 100g/250g | 140/280 | Sigma分装 |
| B552 | PEG400(聚乙二醇400) | 200g | 200 | Sigma分装 |
| B553 | PEG4000(聚乙二醇4000) | 250g/500g/1kg/5kg原装 | 110/200/360/1550 | Merck 817006 |
| B554 | PEG6000(聚乙二醇6000) | 200g | 160 | Sigma分装 |
| B555 | PEG8000(聚乙二醇8000) | 200g/500g | 80/140 | Amresco分装 |
| B556 | PenicillinGNasalt(青霉素G钠盐) | 5g/25g/100g | 150/580/1250 | INALCO原装 |
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