| No |
Analyte |
Standard value |
Uncertainty(k=2) |
CAS |
|
1
|
Methyl red indicator |
0.05%(w/v) |
/ |
493-52-7
|
|
2
|
Bromothymol blue indicator |
0.05%(w/v) |
/ |
76-59-5
|
|
3
|
Potassium chloride solution |
10%(w/v) |
/ |
7447-40-7
|
|
4
|
Diphenylamine sulfuric acid test solution-A |
0.1g |
/ |
122-39-4
|
|
5
|
Diphenylamine sulfuric acid test solution-B |
100mL |
/ |
7664-93-9
|
|
6
|
Standard substance for nitrate composition analysis in water |
100μg/mL（NO3-conversion） |
3% |
7757-79-1
|
|
7
|
Nitrate free water |
/ |
/ |
7732-18-5
|
|
8
|
Dilute hydrochloric acid solution of para aminobenzenesulfonamide |
1%(w/v) |
/ |
63-74-1
|
|
9
|
Naphthalene ethylenediamine hydrochloride solution-A |
0.1g |
/ |
1465-25-4
|
|
10
|
Naphthalene ethylenediamine hydrochloride solution-B |
/ |
/ |
7732-18-5
|
|
11
|
Standard substance for analysis of nitrite content in water |
100μg/mL |
3% |
7632-00-0
|
|
12
|
Nitrite free saline |
/ |
/ |
7732-18-5
|
|
13
|
Ammonium chloride solution standard substance |
31.5μg/mL |
/ |
12125-02-9
|
|
14
|
Alkaline potassium mercuric iodide |
/ |
/ |
/
|
|
15
|
Without ammonia |
/ |
/ |
7732-18-5
|
|
16
|
Dilute sulfuric acid solution |
9.8%-10.0% |
/ |
7664-93-9
|
|
17
|
Standard substance for potassium permanganate titration solution |
c(KMnO4)=0.02012mol/L |
0.2% |
7722-64-7
|
|
18
|
Acetate buffer |
pH=3.5 |
/ |
/
|
|
19
|
Thioacetamide test solution-A |
40g/L |
/ |
62-55-5
|
|
20
|
Thioacetamide test solution-B |
/ |
/ |
/
|
|
21
|
Lead standard solution |
10μg/mL |
/ |
7439-92-1
|
- English
- Русский язык
info@weiyel.com
