Sampling Technologies

ACTI-VOC PLUS

ACTI-VOC PLUS™ is a robust, fast-flow sampling pump kit designed for sampling volatile organic compounds (VOCs) onto sorbent tubes for analysis via thermal desorption (TD). With an expanded flow range compared to the ACTI-VOC series, ACTI-VOC PLUS is the ideal choice for sampling semi-volatile organic compounds (SVOCs), where required sampling flows are in the range of 300–500 mL/min.

The device allows for the sampling of precise air volumes in constant-flow mode (20–500 mL/min). Long battery life ensures stable performance for over 8 hours. The pump is programmable and allows for the recording of sample data. A dedicated carry-case protects the pump from damage during storage and transport. Users can replace the filters and battery themselves to minimize downtime during maintenance.

Read more: ACTI-VOC PLUS flyer

Pumps used for active sampling include 'grab-samplers' and battery-powered pumps. By allowing precise volumes from 20 mL to several hundred liters to be sampled into tubes, this method ensures compatibility with a wide concentration range (from sub-ppt to high ppm levels).

Active sampling can be used in combination with multi-bed sorbent tubes to collect analytes over a wide volatility range; it can also be used for collecting very volatile organic compounds - VVOCs (e.g., propene and chloromethane) through to semi-volatile organic compounds - SVOCs (e.g., dodecyl phthalate and six-ring PAHs).

MTS-32 (multiple-tube sampler)

The MTS-32 Multi-tube sequential sampler is a compact, robust, and portable sampler, designed for unattended sampling of air onto a series of sorbent tubes. Ambient air is pulled sequentially through a series of up to 32 industry-standard thermal desorption tubes by a low-flow sampling pump. Each tube is sampled at the same flow rate, so that the same volume of air is collected.

- Field-portable – the MTS-32 can be used virtually anywhere

- Labour-saving, unattended sampling – retrieve the instrument at the end of the extended sampling period

- Trusted sample integrity – tubes are sealed with diffusion-locking technology, preventing unwanted air ingress and sample loss

Read more: MTS-32 flyer

Micro-Chamber/Thermal Extractor

The Micro-Chamber/Thermal Extractor™ (µ-CTE™) is a versatile and compact unit with four small cylindrical chambers that enables the sampling of chemicals released from products or materials. Released volatile and semi-volatile organic compounds (VOCs and SVOCs) are collected onto sorbent tubes for analysis by TD–GC–MS. Applications range from emissions screening of construction materials, consumer products, and car trim to aroma or fragrance profiling.

- Designed for sampling VOCs or SVOCs emitted from products and materials.

- Humidifier and permeation accessories extend the capabilities of the instrument.

- A full range of accessories for the Micro-Chamber/Thermal Extractor is available.

Read more: Micro-Chamber brochure