Ehrlich Reagent Testing Kit for Drug Checking - Smplest Laboratories

Ehrlich Reagent

Regular price €19,90
Tax included.
Ehrlich Reagent Test Kit for Drug Checking - Smplest Drug Testing
Ehrlich Reagent Test Kit for Drug Checking - Smplest Drug Testing
Ehrlich Reagent Test Kit for Drug Checking - Smplest Drug Testing

The Ehrlich Reagent is the most widely used kit to detect compounds with an indolic ring in their chemical structure.

The reagent is prepared by dissolving 0.5–2.0 g of p–dimethylaminobenzaldehyde (DMAB) in 50 mL of 95% ethanol and 50 mL of concentrated hydrochloric acid and is best used when fresh. Other alcohols, such as 1-propanol, can also be used as well.



  • One 5ml Bottle Containing The Ehrlich Reagent
  • FREE Safety Gloves
  • One Test Tube
  • Detailed Instructions
  • Color Chart For Reading Results
  • Fresh Batches Made Every Week For Optimal Quality
  • FREE Shipping To All Of Europe


Place a small sample (2-5mg) of the substance you want to analyze in the provided plastic tube. If preferred, the test can be performed on a white ceramic surface for clearer results (e.g. kitchen plate). Add a drop of Smplest Ehrlich to the sample and expect it to change colors.

The ehrlich test confirms the presence of indole groups in a sample. We highly recommend testing your sample with the Hofmann reagent as well. This will also serve as a reliable validation of the results obtained with the Ehrlich reagent. 

Upon reaction, the sample will gradually turn purple/magenta. The reaction can take a while to take place (up to 3 minutes), especially if the substance is impregnated in blotter paper.

When finished, clean all material thoroughly with plenty of water. The entire protocol takes approximately 5 minutes. Store at cold temperature, preferably in the freezer for longer shelf life (up to 12 months).


Founded in early 2017, we are a group of Barcelona-based PhDs and experts in HPLC-MS and reagent analysis. You can ask us anything. We're here to help. Just drop us a line at or contact us directly using our direct messaging option. 

We produce only high laboratory grade reagents. We are the most trusted and well rated testing reagent laboratory in the European marketplace.



We serve all of Europe and charge no shipping fees. Orders usually arrive within 5 working days and you may pay using your credit/debit card, paypal or any of the main cryptocurrencies.