Reagents – PRO Test

Color change reactions of Hofmann reagent with LSD

Jerzy Afanasjew — Fri, 06 Jun 2025 12:16:30 +0000

What is Hofmann reagent? Hofmann reagent test (often misspelled as "Hoffman" or "Hoffmann") is named after the inventor of LSD-25, the Swiss chemist Albert Hofmann. It is primarily used for the identification of psychedelic indoles such as lysergamides and tryptamines. Together with Ehrlich’s reagent, it forms the foundation of testing for LSD, DMT, and their derivatives. […]

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How to use crystalline reagents?

Jerzy Afanasjew — Tue, 14 Nov 2023 19:22:32 +0000

As a result of change in regulations we have replaced some liquid reagents with crystalline ones. "Crystals" may not be intuitive for everyone at first, so we are publishing the following guide and instructional video. Following the instructions is essential to fully benefit from dry colorimetric reagent tests. How to use crystalline reagents: Shake the […]

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Is Scott’s reagent reliable?

Jerzy Afanasjew — Mon, 04 Sep 2023 13:10:33 +0000

What is Scott's reagent? Scott reagent (also known as Scott’s reagent) is one of the most popular drug checking tests, used in particular for cocaine. It contains cobalt thiocyanate in a water solution and in the presence of cocaine (although not exclusively) shows a color change from a reddish color (without sample) to deep blue (with […]

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Is Mandelin reagent reliable?

Jerzy Afanasjew — Mon, 04 Sep 2023 09:29:58 +0000

What is Mandelin reagent? Mandelin reagent (sometimes incorrectly called Medelin reagent or Mendelin reagent) is one of the most popular colorimetric reagent tests for identifying psychoactive compounds. Despite its popularity we have decided to discontinue it in light of several major quality concerns explained in the article below. The Mandelin reagent serves as a straightforward […]

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Cannabis Reagent Test Instructions

Jerzy Afanasjew — Sun, 16 Oct 2022 16:49:00 +0000

Cannabis reagent test consists of 2-parts, one with 4-aminophenol and the other with a strong base. It has become widely used after the growth of CBD products. First used by forensics in Switzerland, it has quickly became the global standard for rapid testing cannabis flower. It is most reliable for samples with CBD/THC ratio of […]

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Ehrlich Reagent Test Instructions

Jerzy Afanasjew — Tue, 27 Oct 2020 21:32:22 +0000

Ehrlich Reagent Test Instructions Developed by German chemist Paul Ehrlich in the late 19th century, the Ehrlich reagent test is a widely used colorimetric test in forensic toxicology for the presumptive identification of various substances, including illicit drugs like LSD (lysergic acid diethylamide). Its primary function is to detect the presence of indoles, a class […]

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Robadope Reagent Test Instructions

Jerzy Afanasjew — Tue, 27 Oct 2020 21:18:51 +0000

Robadope Reagent Test Instructions Robadope, a modified version of Simon’s reagent tailored for primary amines, serves as a crucial tool in drug testing. Widely utilized in forensic and harm reduction settings, Robadope plays a pivotal role in identifying substances such as 2C-B, amphetamine, MDA or PMA, aiding in the recognition and analysis of a diverse […]

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Simon’s Reagent Test Instructions

Jerzy Afanasjew — Tue, 27 Oct 2020 20:58:43 +0000

Simon’s Reagent Test Instructions Simon’s reagent test is a chemical colorimetric test used for the detection of secondary amines. By adding the reagent to a sample, a characteristic blue color change occurs, indicating the presence of these compounds. Simon’s reagent test has found extensive application in forensic and drug testing contexts, aiding in the identification […]

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Froehde Reagent Test Instructions

Jerzy Afanasjew — Tue, 27 Oct 2020 20:43:48 +0000

Froehde Reagent Test Instructions The Froehde reagent is commonly used in drug analysis to identify the presence of certain substances. It is a mixture of molybdophosphoric acid and concentrated sulfuric acid. When applied to a sample, it produces various color reactions that can help distinguish between different compounds. The test is particularly useful in detecting […]

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Scott Reagent Test Instructions

Jerzy Afanasjew — Tue, 27 Oct 2020 20:28:51 +0000

The Scott reagenton its own is pink. These instructions are kept for reference — we no longer recommend the Scott reagent for cocaine, because lidocaine, benzocaine and the other “caines” turn it the same blue. Use MORRIS instead. Scott also reacted with a-PVP, MDPV and derivatives.NOTE: Scott can only test the PRESENCE, but not QUANTITY […]

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