| 11. | Butter - determination of ph of the serum - potentiometric method
|
| 12. | Water quality - determination of fluoride ion - potentiometric method
|
| 13. | Water quality - determination of anionic detergent - potentiometric method
|
| 14. | Analysis of tea - determination of fluoride content - potentiometric method
|
| 15. | Sodium sulphate for industrial use . measurement of ph . potentiometric method
|
| 16. | Sodium tripolyphosphate for industrial use - measurement of ph - potentiometric method
|
| 17. | Pha . hydrogen peroxide for industrial use . determination of apparent ph . potentiometric method
|
| 18. | Surface active agents . determination of ph of aqueous solutions . potentiometric method
|
| 19. | Hardmetals ; determination of cobalt ; potentiometric method ; identical with iso 3909 : 1976
|
| 20. | Determination of ph of sodium carboxymethylcellulose for detergents potentiometric method
|
