Sorbent Tube, Microlite, 6X70, 200mg, 50/BX Back Catalog number: 811-9963-50 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-9903-50 Charcoal Tube, Coconut Shell, Jumbo, 200/800mg, 10 Price on request 811-9982-50 Sorbent Tube, Porapak-P, 6X110, 100/50, 50/BX Price on request 800072 Tube Holder Single Variable Flow, only Price on request