| Controllers - Conductivity Analog Monitor/ Controller 0 to 200,000uS - Catalog # 6617-3864 | EA | 
| Controllers - Conductivity Analog Monitor/ Controller 0 to 50,000ppm - Catalog # 6617-3865 | EA | 
| Controllers - Conductivity Controller  0 to 2,000uS - Catalog # 6617-3860 | EA | 
| Controllers - Conductivity Controller  to 2,000 ppm - Catalog # 6617-3861 | EA | 
| Controllers - Conductivity Controller 115 VAC - Catalog # 6618-2318 | EA | 
| Controllers - Conductivity Digital Monitor/ Controller 0 to 2,000 ppm - Catalog # 6617-3867 | EA | 
| Controllers - Conductivity Digital Monitor/ Controller 0 to 200uS - Catalog # 6617-3866 | EA | 
| Controllers - Controller, K Type - Catalog # 6618-5004 | EA | 
| Controllers - DUAL PH CONTROLLER/RECORD 110V - Catalog # 6619-3548 | EA | 
| Controllers - Economical pH/ORP Controller - Catalog # 6617-0063 | EA | 
| Controllers - Microprocessor-based ORP Controller 115 Vac - Catalog # 6618-2235 | EA | 
| Controllers - Microprocessor-based pH Controller - Catalog # 6615-9131 | EA | 
| Controllers - Microprocessor-based pH/ORP Controller 115 Vac - Catalog # 6618-2236 | EA | 
| Controllers - Mini-Time Controller - Catalog # 6603-5812 | EA | 
| Controllers - Mini-Time Controller, NIST Certified Model - Catalog # 6601-0126 | EA | 
| Controllers - ORP Controller - Catalog # 6618-2317 | EA | 
| Controllers - pH Controller - Catalog # 6617-4028 | EA | 
| Controllers - pH Controller - Catalog # 6618-2315 | EA | 
| Controllers - PH CONTROLLER/RECORDER 110V - Catalog # 6619-3547 | EA | 
| Controllers - PH CONTROLLER/RECRD BENCH 110V - Catalog # 6619-3546 | EA | 
| Controllers - pH/ORP Controller - Catalog # 6603-0013 | EA | 
| Controllers - Type 45 Series Analog pH/ORP Controller - Catalog # 4505 | EA | 
| Controllers - Type 47 pH Controller - Catalog # 4513 | EA |