Charcoal Tube, Coconut Shell, Standard, 50/100mg, 6 x 70mm (Packg of 50) Back Catalog number: 801935 Manufacturer: SENSIDYNE Availability: 3 weeks Price on request - + Recommended 158S Sensidyne Gas Detector Tubes, Styrene (2.5-300 ppm), pk/10 Price on request 800072 Tube Holder Single Variable Flow, only Price on request 800071-10 Tube Holder Housing End, 5/8", for 1/4" OD, Open End (Packg of 10) Price on request