ROTI®Fair pNPP 20mg , 24 unit(s), blister
Transport temp. ambient temp.
WGK 1
0,1 % pNPP solution (1 mg/ml) is prepared by dissolution of 1 tablet in 20 ml substrate buffer.
CHF136.50/Pack Qty.
excl. VAT. | 24 unit(s) per Pack Qty.
Art. No. 1128.1
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Product details
Exactly pre-weighed tablets for convenient and rapid preparation of pNPP solution.
Prepared solution may be sterilized by filtration (0,22 µm). The solution has to be stored at -20 °C in aliquots.
ROTI®Fair pNPP 20mg 20 mg/tablet, for biochemistry
| Batch quantity | 20 mg/tablet |
| End concentration | 1 mg/ml |
| Enzyme | Alkaline phosphatase |
| Detection | Colour (yellow) |
| Buffer/solution | pNPP (tablet), p-Nitrophenyl phosphate |
| Signal product | soluble (ELISA, activity assay) |
| Use | Substrate solution for alkaline phosphatase |
- Subtotal: 0.00
| Order No. | Pack Qty. | Pack. | Price | Quantity | ||
|---|---|---|---|---|---|---|
| 1128.1 | 24 unit(s) | blister | CHF136.50 |
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| 1128.2 | 100 unit(s) | plastic | CHF488.60 |
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- Subtotal: 0.00
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General information
Stock solutions (All solutions are stable for at least 1 year at 4 °C):
0.5 g NBT in 10 ml 70 % dimethylformamide;
0.5 g BCIP (p-toluidine salt) in 10 ml 100 % dimethylformamide.
Incubation buffer for alkaline phosphatase:
100 mM NaCl, 5 mM MgCl2,100 mM Tris (pH 9.5).
Fresh substrate solution: 66 μl NBT stock solution + 10 ml incubation buffer, mix well, add 33 μl BCIP stock solution. Use within 1 hour.
Blot development: Approx. 10 ml substrate solution per 15 x 15 cm2 membrane surface. Develop at room temperature until bands become visible (approx. 30 mins).
Reaction stop: Rinse with PBS/20 mM EDTA.
Dissolve 1 mg TMB in 0.1 ml dimethylsulfoxide (Art. No. 4720); add 9.9 ml of a 0.1 M sodium acetate solution (pH 6.0) (Powder: Art. No. 6779), filter and add H2O2 (Art. No. 8070) (final concentration 0.01 %).
Always prepare freshly!
Incubation 10-30 mins at room temperature (approx. 50 μl per microtitre well; finally add 50 μl 1 M H2SO4, Art. No. X873, per well).
Photometric quantitation at 450 nm.
Reference: Bos, E.S. et al., (1981) J. Immunoassay 2, (3/4), 187.
Certificates of Analysis
Composition
| Prepared solution contains 1 mg/ml pNPP, when 1 tablet is dissolved in 20 ml substrate buffer or deionized, or distilled, water. |