1. Phenolphthalein  Indicator
2. Methyl  Orange  Indicator
3. 0.02  N  H₂SO₄  ( F =  40 )
4. 0.05  N  H₂SO₄  ( F = 100 )

1. Potassium  Chromate  Indicator
2. 0.0705 N AgNO₃ I ( F = 100 )
3. 0.0282 N AgNO₃ II ( F = 40 )
4. 0.0141 N AgNO₃ III ( F = 20 )

1. Eriochrome  Black  T
2. Sodium  Sulfide  Solution
3. Ammonium  Buffer  Solution
4. EDTA  Solution

1. Hydroxylamine Hydrochloride
2. Potassium Hydroxide
3. Potassium Cyanide
4. NaNa Indicator

1. Manganese Sulphate
2. Alkali – Azide
3. Starch Solution
4. Standard Sodium Thiosulphate

1. Ferroin Indicator
2. K₂Cr₂O₇ 0.25 N
3. FAS
4. Sulfuric Acid + Ag₂SO₄

ค่าความเป็นกรด - ด่าง (pH) , ค่าคลอรีน (Cl₂)

1. Phenol – Red
2. OTO