1. Adwa AD1000 three point pH c alibration http://www.youtube.com/watch?v=msL2oVCP3lE
2. Adwa AD3000 EC/TDS standard calibration http://www.youtube.com/watch?v=jePIfm6Gy10
3. Adwa AD3000 Zero calibration http://www.youtube.com/watch?v=B16n8NG0v60
4. Adwa AD3000 EC/TDS/Temp. measurement http://www.youtube.com/watch?v=nqEyMYoZS48
5. Adwa AD8000 ORP measurement http://www.youtube.com/watch?v=TWvfr6iBqls
6. Adwa AD630 probe preparation,offset and slope calibration http://www.youtube.com/watch?v=iypQWNDvb6M
7. Adwa AD630 Slope calibration http://www.youtube.com/watch?v=BnBHJK6MQ44
8. Adwa AD132 ORP measurement http://www.youtube.com/watch?v=mELOEbcsyLg
9. Adwa AD332 EC/TDS calibration http://www.youtube.com/watch?v=IJlq6Lag9Xw
10. Adwa AD332 EC/TDS/Temp. measurement http://www.youtube.com/watch?v=xjXMESwO1B0
11. Adwa AD111 ORP measurement http://www.youtube.com/watch?v=5xJFJubtOjE
12. Adwa AD310 EC calibration http://www.youtube.com/watch?v=xrSMajuGte8
13. Adwa AD310 EC measurement http://www.youtube.com/watch?v=DF3iFd4OYzQ
14. Adwa ECO209 pH calibration http://www.youtube.com/watch?v=XsoODtotrIM
15. Adwa AD11 two point pH calibration http://www.youtube.com/watch?v=VEPcNOT-VQ0
16. Adwa AD12 pH calibration http://www.youtube.com/watch?v=ho66nC-r9W8
17. Adwa AD14 two point pH calibration http://www.youtube.com/watch?v=EqLx7UqAFF8
18. Adwa AD31 EC/TDS calibration http://www.youtube.com/watch?v=sylDqcXNecg
19. Adwa AD32 EC/Temp. measurement http://www.youtube.com/watch?v=-mz3d_kWebo
20. Adwa AD32 EC/TDS calibration http://www.youtube.com/watch?v=M__te2BWtYM
21. Adwa AD33 EC calibration http://www.youtube.com/watch?v=vvq0WtEhLa8
22. Adwa AD33 EC/Temp. measurement http://www.youtube.com/watch?v=UsNGXfIIbzw
23. Adwa AD35 EC tester calibration http://www.youtube.com/watch?v=V2XPP7w4TnU
24. Adwa AD100 pH calibration http://www.youtube.com/watch?v=EtMmjIujgsM
25. Adwa AD101 pH calibration http://www.youtube.com/watch?v=d6JvfjGsRc4
26. Adwa AD201 TDS measurement http://www.youtube.com/watch?v=_PINYRxh-t8
27. Adwa AD201 TDS calibration http://www.youtube.com/watch?v=buWAUhwWCxk
28. Adwa AD202 TDS measurement http://www.youtube.com/watch?v=uhDt2x1NWLo
29. Adwa AD202 TDS calibration http://www.youtube.com/watch?v=Ci9ubeg4CVM
30. Adwa AD203 EC calibration http://www.youtube.com/watch?v=2_UNnNtXETM
31. Adwa AD203 EC measurement http://www.youtube.com/watch?v=aHfr1yC-4bY
32. Adwa AD204 EC measurement http://www.youtube.com/watch?v=m5WvWSgY9cs
33. Adwa AD204 EC calibration http://www.youtube.com/watch?v=oH0kyiVx964
34. Adwa AD3230B ORP electrode check https://www.youtube.com/watch?v=FBYJFIdbUDo
35. Adwa Standard pocket tester battery replacement http://www.youtube.com/watch?v=PIiRL7x410Q
36. Adwa Waterproof pocket tester battery replacement http://www.youtube.com/watch?v=QFlS3xetO70
37. Adwa Standard pocket tester electrode storage http://www.youtube.com/watch?v=J-iuPqceF9I
38. Waterproof pocket tester electrode storage http://www.youtube.com/watch?v=FykJq_NBqHE
39. Adwa Waterproof testers - watertight seals https://www.youtube.com/watch?v=vQA3kRnZMGE