| 301 | Lutron PM-9100 Manometer, 2000 mbar, differential input | |
| 302 | Lutron YK-30WA Pure Water Meter | |
| 303 | Lutron WA-300 Pure Water Tester | |
| 304 | Lutron YK-31SA Salt Meter | |
| 305 | Lutron YK-2001PHA PH/ORP, DO, CD/TDS, Salt Meter | |
| 306 | Lutron YK-2005WA PH/ORP, DO, CD/TDS Meter | |
| 307 | Lutron WA-2017SD PH/ORP, DO, CD/TDS, Salt Meter, SD Card | |
| 308 | Lutron WA-2015 Bench PH/ORP, DO, CD/TDS Meter | |
| 309 | Lutron PH Electrodes & PH Temp. Probe | |
| 310 | Lutron PWH-303 Pure Water/Hardeness Tester | |
| 311 | Lutron PWA-301 Pure Water Tester | |
| 312 | Lutron PSA-311 Salt Meter | |
| 313 | Lutron PPH-2018 Panel PH Controller/Monitor | |
| 314 | Lutron PH-230SD PH Meter, SD Card | |
| 315 | Lutron PH-224S PH/ORP Meter | |
| 316 | Lutron PH-222 Pen PH Meter | |
| 317 | Lutron PH-220S Soil Pen PH Meter, Separate Probe | |
| 318 | Lutron PH-220 Pen PH Meter, Separate Probe | |
| 319 | Lutron PH-212 Soil PH Meter | |
| 320 | Lutron PH-221 PH Meter, ATC, Two Displays | |
| 321 | Lutron PH-207HA PH Meter | |
| 322 | Lutron PH-207 PH Meter, RS-232 | |
| 323 | Lutron ORP-14 ORP Electrode, Professional | |
| 324 | Lutron NI-214 Alkaline Negative Ion Water Tester | |
| 325 | Lutron YK-23RP ORP Meter | |
| 326 | Lutron ORP-213 Pen ORP Meter, Separate Probe | |
| 327 | Lutron ORP-203 Pocket ORP Meter | |
| 328 | Lutron PMS-714 Soil Moisture Meter | |
| 329 | Lutron PMS-713 Pen Moisture Meter (Wood/Concrete) | |
| 330 | Lutron MS-7013 Wood Moisture, Pinless | |