SX690641415 SX12W-100 S500C-ORP/10 S200CD/10/BNC obsolete , replaced by PH6000; 61110112-FL PH2 OLCT20 VOC cell OLCT20/SC obsolete, replaced by OLCT20 VOC cell;Gas sensor 690150406 Gegenstecker Modell 490513044 SX-12V-025-HP-12, 5; S272CDTC-PH 0-14 PH S200C/20/BNC 200 C-6M EPOXY PH METER PROBE SK1-HT125-FS-JM18-P-S-KL SX8MM 10 9200M