• Sample Preparation for Drug testing via Hair Analysis

Preparative

Sample Preparation for Drug testing via Hair Analysis

In order to prove the consumption of drugs (cocaine, cannabis products, amphetamines) even after long periods of time, hair is frequently analysed.

It is dissolved in certain acids and then analysed via gas chromatography or the mass spectrometer. The dissolving in the acid is accelerated and improved through the enhancement of the specific surface area of the sample. Here the Fritsch Mini-Mill -PULVERISETTE 23 is used.

In a 15ml steel cup, 300-500mg hair is weighed. As a grinding body a 15mm steel ball is used. After a grinding duration of 5 minutes a fine powder is attained (< 100µm), which can be used for the following analysis.

For larger amounts or for the grinding of two samples simultaneously, the Fritsch Planetary Micro Mill PULVERISETTE 7 classic line can be used. In a 45 ml grinding bowl made of zirconium oxide, sintered corundum, silicon nitride approximately 0.1-1g of hair is weighed in and 7x15mm grinding balls are added. The grinding time is 5 - 20 minutes. Afterwards a fine powder is obtained (< 100 µm), which can be used for additional analysis.

More information online: www.fritsch.de


Events

HPLC 2025

Jun 15 2025 Bruges, Belgium

LabAsia 2025

Jul 14 2025 Kuala Lumpur, Malaylsia

SinS Solutions in Science

Jul 15 2025 Brighton, UK

ACS National Meeting - Fall 2025

Aug 17 2025 Washington DC, USA & Virtual

MC 2025

Aug 31 2025 Karlsruhe, Germany

View all events