| RKI Digester Gas Monitor | envirotechonline.com | 11929.95 USD | — | — |
| RKI FP-330 Formaldehyde Paper Tape Monitor | envirotechonline.com | 4222.95 USD | — | — |
| RKI FI-8000 Optical Interferometer — Fumigation & Anesthetic Gas Monitor | envirotechonline.com | 3825 USD | — | — |
| RKI GX-6100 4 Gas with PID Gas Monitor 72-61ABXX-A | pksafety.com | 3727.5 USD | — | — |
| RKI FP-301 High-Sensitivity Paper Tape Gas Monitor | envirotechonline.com | 3665.95 USD | — | — |
| RKI FP-300 Paper Tape Gas Monitor | envirotechonline.com | 3642.95 USD | — | — |
| RKI Beacon 3200 Gas Detection Controller | envirotechonline.com | 3577.95 USD | — | — |
| RKI AirLink 7032 Wireless Touchscreen Controller | envirotechonline.com | 3449.95 USD | — | — |
| RKI Beacon 800 Eight Channel Fixed System Gas Detection Controller | pksafety.com | 3271.15 USD | — | — |
| RKI SC-8000 Hydrogen Peroxide Gas Monitor 73-0053-H2O2 | pksafety.com | 3246.92 USD | — | — |
| RKI Telemetry Hardware, Modbus Output 85-VCM | pksafety.com | 3040.38 USD | — | — |
| RKI AC-7412 Wired Gas Controller | envirotechonline.com | 3024.95 USD | — | — |
| RKI RX-8500 Marine Multi-Gas Monitor | envirotechonline.com | 2850 USD | — | — |
| RKI GX-6100 4-Gas Monitor w/TC Sensor 72-61AXXT-C | pksafety.com | 2574.83 USD | — | — |
| RKI AirLink 7010 Wireless Controller | envirotechonline.com | 2304.95 USD | — | — |
| RKI Aspirator Sampling Panel | envirotechonline.com | 2160.95 USD | — | — |
| RKI SDM-3R Calibration Station Bundle | pksafety.com | 2150.21 USD | — | — |
| RKI T3A Sensor/Transmitter with J-Box (SO2) 66-6310-20 | pksafety.com | 2119.62 USD | — | — |
| RKI AirLink 6900/6940 Wireless Multi-Sensor Transmitter | envirotechonline.com | 2081.95 USD | — | — |
| RKI M2A-XL MPS type LEL Sensor/Transmitter with J-Box 65-2650XL | pksafety.com | 2019.23 USD | — | — |
| RKI SC-9000 Toxic Gas Detector | envirotechonline.com | 1924.95 USD | — | — |
| Calibration Station for GX-2009; 81-SDM2009-06 | pine-environmental.com | 1890.3 USD | — | — |
| RKI Beacon 410A Fixed Systems Controller | envirotechonline.com | 1874.95 USD | — | — |
| RKI Beacon 800 Fixed Systems Controller | envirotechonline.com | 1855.95 USD | — | — |
| RKI MC-6400 Modbus Controller | envirotechonline.com | 1839.95 USD | — | — |
| RKI GX-9000 Marine Gas Monitor | envirotechonline.com | 1819.95 USD | — | — |
| RKI AirLink 9850 Wireless Gas Receiver | envirotechonline.com | 1814.95 USD | — | — |
| RKI AirLink 7530 Wireless Relay Module | envirotechonline.com | 1813.95 USD | — | — |
| RKI GD-70D H2, 0-100% LEL, Ethernet & 4-20 mA | pksafety.com | 1811.54 USD | — | — |
| RKI VOC Pro Fixed PID Gas Detector | envirotechonline.com | 1800.95 USD | — | — |
| RKI RX-8000 Marine Gas Monitor | envirotechonline.com | 1767.95 USD | — | — |
| RKI GD-K88AI Diffusion Sensor/Transmitter for CO | pksafety.com | 1753.85 USD | — | — |
| RKI SCADACORE Telemetry Gateway | envirotechonline.com | 1724.95 USD | — | — |
| RKI Beacon 200 Fixed Systems Controller | envirotechonline.com | 1718.95 USD | — | — |
| RKI SC-8000 Toxic Gas Detector | envirotechonline.com | 1583.95 USD | — | — |
| RKI SDM-3R Stand Alone Calibration Station 81-SDM3R101 | pksafety.com | 1571.54 USD | — | — |
| RKI AirLink 9900 Wireless Signal Repeater | envirotechonline.com | 1504.95 USD | — | — |
| RKI NC-1000 Sample-Draw ppm Gas Detector | envirotechonline.com | 1488 USD | — | — |
| RKI AirLink 5900 Wireless Gas Detector Converter | envirotechonline.com | 1454.95 USD | — | — |
| RKI Model 1017 Explosion-Proof Combustible Gas Detector | envirotechonline.com | 1377.95 USD | — | — |