If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
Stock solutions of RNase A can be made in 10 mM Tris-HCl, pH 7.5, 15 mM NaCl at a concentration of 10 mg/mL.
This product is stable for at least 3 years when stored properly at -20 °C.
RNase A solutions can be stored, aliquoted and frozen at -20 °C.
Boiling of stock solutions to inactivate residual DNase is not necessary and may cause precipitation of RNase with loss of enzymatic activity.
We suggest using RNase A at a concentration of 10 ug/ml.
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
The Kunitz unit was created to reflect the non-linear nature of the RNAse enzymatic reaction. As the reaction progresses the activity changes due to RNA as a heterogeneous polymeric substrate; therefore, the unit of moles or micomoles per minute becomes inaccurate. As such, our enzymatic assay describes a unit that varies throughout the reaction: One unit will cause a decrease of 100% per minute in the value of E0 - Ef at pH 5.0 at 25°C. Ef is determined in the RNAse control step, while E0 reflects the current reaction rate.
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