IERENTS.COM Toggle Search Account Checkout Cart Rental Equipment Water Quality and Sampling Water Quality Meters Multi Parameter Dissolved Oxygen Turbidity Spectrophotometer Water Sampling AC Centrifuge Pumps DC Centrifuge Pumps Bladder Pumps / Air Driven Peristaltic Pumps Inertial Pumps Water Level Meters Water Interface Meters Water Level Data loggers In-Situ Solinst Waste Water Waste Water Sampling Supplies Downhole Inspection Camera Water Flow Meters Hach OTT MF PRO Meter Teledyne ISCO Product Recovery Pumps Industrial Hygiene and Safety Air Sampling Sampling Pumps Pump Calibrators Pump Accessories Aerosol / Dust / Particle Counters Fit Testing Quantitative Fit Test Equipment Fit Test Mask Adapters IAQ / Air Velocity / Pressure / Moisture Sound Meters Heat Stress / Light Meters XRF Confined Space Fall Protection Breathing Air Gas Meters Total Hydrocarbon Detectors - PID/FID Multi-Gas Meter - Personal Single-Gas Meter - Personal Landfill Gas Meters Specialty Meters Portable GC Detector Tube Pumps Soil & Soil Gas Survey & GPS Stack Instruments Dataloggers EPA Protocol Gases Gas Conditioners / Sample Lines Sales Water Quality Multi-Parameter Horiba YSI Oakton Single-Parameter Horiba YSI Oakton Calibration Standards pH Conductivity ORP Turbidity D.I. Water Gloves Cleaning Supplies Safety I.H. Equipment Gas Meters Aerosol Meters Air Sampling Sound Meters Air Velocity / Pressure Meters Flow Calibrators IAQ Meters Respirator Fit Testers Heat Stress Particle Counters Confined Space Entry & Fall Protection Tripods / Davit / Winch / SRL Ventilation Equipment Anchorage Harnesses Lanyards Life Lines / ladder Systems Supplied Air & Respirators PPE - Personal Protection Equipment Clothing Eye Protection Hand Protection Head Protection Hearing Protection Lighting Safety Vests / Cooling Vests Calibration Gas Regulators Water Sampling Well Plugs Bladder Pumps, Controllers, Parts and Accessories Solinst Bladder Pump Systems Geotech Bladder Pump Systems QED Bladder Pump Systems Solinst Bladder System Parts and Accessories Geotech Bladder System Parts and Accessories QED Bladder System Parts and Accessories A/C Submersible/Centrifuge Pumps Controllers Parts D/C Submersible/Centrifuge 12 Volt Plastic Pumps and Controllers 12 Volt Stainless Steel Pumps and Controllers Pump Parts Peristaltic Geotech Geopump Solinst Model 410 Inertial Tubing LDPE - Low Density Polyethylene FEP Lined LDPE Dual Bonded FEP / PTFE "Teflon" Silicone HDPE - High Density Polyethylene PVC / Vinyl Bailers Polyethylene PVC Teflon Rope Ground Water Filters Water Level Water Level Meters Solinst Canada Heron Instruments Interface Meters Transducers Solinst Tranducers Solinst Transducer Cables and Parts Water Level Meter Parts Solinst Canada Heron Instruments Interface Meter Parts PID / FID Detectors PID - Photoionization Detectors FID - Flame Ionization Detectors Combination PID/FID - Photo & Flame Ionization PID / FID Parts RAE MiniRAE Lite, 3000, PPB, UltraRAE Parts Thermo TVA Parts Repair & Calibration Articles Clearance Search site Submit search Nav Menu 2 Nav Menu 3 Nav Menu 4 Nav Menu 5 Nav Menu 6 Nav Menu 7 Nav Menu 8 Home > Sales > Safety > I.H. Equipment > Air Sampling > Detector Tubes & Pumps > Sensidyne > Tubes > n-Butane (0.05-0.6 %v) Our Price: $69.00 Product Code: SEN221SA Qty: Features Related Items Sulfuric Acid (0.5-5 mg/M3) Hydrocarbons (Qualitative - Arsen Investigation) Nitric Oxide & NO2 - separately measured (flue gas kit version) (NO: 10-300 ppm, NO2: 1-40 ppm) Nitric Acid Vapor (1-20 ppm) Our Price: $69.00 Add Our Price: $69.00 Add Our Price: $69.00 Add Our Price: $69.00 Add Carbon Monoxide (TWA) (5-400 ppm) Hydrogen Chloride (20-1200 ppm) Acetic Acid (1-50 ppm) Toluene (TWA) (20-200 ppm) Our Price: $69.00 Add Our Price: $78.00 Add Our Price: $78.00 Add Our Price: $69.00 Add