Gas and Vapour Sampling Accessories

Note that the Universal series of air sampling pumps have an internal adjustment (regulator) for low flow sampling. For the Universal pumps the relevant Adjustable/Non-Adjustable Low Flow Tube Holders and Tube Covers are purchased as required.

A CPC is a device which allows a sampling pump to operate at low flow rates and with the optional adjustable low flow tube holders.

The CPC is placed inline between the adjustable low flow tube holder and the pump inlet, and regulates the specific amount of pressure to be maintained across the needle valve(s) on the supply (pressure) end of the sampling train. During sampling a valve inside the CPC opens and pulls additional air into the train on the pump (vacuum) end of the CPC as needed, to maintain the CPC-specified pressure across the needle valve(s). Note that the All-in-One low flow tube holder (224-27) is available which combines a CPC with a single low flow adjustable tube holder.

 * Not required when using a single adjustable low flow tube holder with a Pocket Pump TOUCH pump

224-26-CPC Instructions		224-26CPC-10 Instructions

These products enable a sampling pump to be used with up to 4 sorbent tubes at the same time, either the same tube type running at different flow rates, or with different tubes running at the same or different flow rates.

Note that when using a single tube with the Pocket Pump Touch the Non-Adjustable Low Flow Tube Holder is used.

Description	Number of Tubes	Part Number
Single adjustable low flow tube holder (all pumps except Pocket Pump Touch)	1	224-26-01
Double adjustable low flow tube holder	2	224-26-02
Triple adjustable low flow tube holder	3	224-26-03
Quadruple adjustable low flow tube holder	4	224-26-04
All-In-One low flow single tube holder Combines an adjustable low flow tube holder and Constant Pressure Controller (CPC) in one unit. Not for use with Universal Pumps.	1	224-27

224-26-01

224-26-02

224-26-03

224-26-04

224-27

Adjustable Low Flow Tube Holder Instructions		All-In-One Low Flow Tube Holder Instructions

These protect the ends of the tube for storage and transit. The appropriate tube cover must be selected by matching the Tube Cover type in the Sorbent Tube Selection Charts. Note that tube covers Types A to D are for use with SKC Adjustable Low Flow Tube Holders only. Collar clips are attached for convenience.

Tube Cover	Size OD x Length	Part Number
A	6 mm OD x 70 mm L	224-29A
B	8 mm OD x 110 mm L	224-29B
C	10 mm OD x 150 mm L	224-29C
D	10 mm OD x 220 mm L	224-29D
V	OVS Tubes* (do not use an adjustable low flow holder)	224-29V
P	Low-volume PUF** (polyurethane foam). Note: do not use an adjustable low flow holder	224-29P
H	16mm OD. Specifically for use with sorbent tubes 226-142 and 226-177	224-29H

* OSHA Versatile Sampler (OVS) tubes are typically used at a flow rate of 1 L/min provided by a personal sample pump. The special OVS tube holder is designed to accommodate the 13 mm diameter of SKC OVS tubes, provide a convenient clip to attach the tube in the breathing zone, and protect the tube during sampling. Includes 0.9 m (3ft) of tubing.

** Low-volume PUF (polyurethane foam) tubes are typically used at a flow rate of 1 to 5 L/min provided by a personal sample pump. Therefore, a special tube holder is used in place of an adjustable low flow holder that only allows flows to 500 ml/min. The low-volume PUF tube holder is also specially designed to accommodate the large 22 mm diameter and long 100 mm length of SKC low-volume PUF tubes. Includes 0.9 m (3ft) of tubing.

224-29A

224-29B

224-29C

224-29D

224-29V

224-29P/-29H

OVS Tube Holder Instructions		224-29H Tube Holder Instructions

Non-adjustable low flow tube holders with plastic tube covers for use with the Pocket Pump Touch Pump.

Tube Cover	Size OD x Length	Part Number
A	For Standard tubes 6 mm OD x 70 mm length	222-3-1
B	For Tubes 7 or 8 mm OD x 110 mm length	222-3L-1
C	For Tubes 10 mm OD x 150 mm length	222-3XL-1
D	For Tubes 10 mm OD x 220 mm length and shorter tubes	222-3XD-1