Inspection of farmland irrigation water

To prevent soil, groundwater, and agricultural product pollution, ensure human health, maintain ecological balance, and promote

The BAIJIAN Research Institute has multiple laboratory branch offices nationwide, almost covering medium-sized cities at the provincial capital level, making testing more convenient for you! Home sampling is available nationwide. The detection report can be queried for authenticity with one click. The BAIJIAN Research Institute has established strategic partnerships with multiple scientific research units, possessing testing and analytical instruments and equipment in materials, chemistry, and other related fields, as well as an experienced high-level talent team, to provide customers and industries with more comprehensive, high-quality, and convenient testing consulting services

Overview of Testing

In order to prevent soil, groundwater, and agricultural product pollution, ensure human health, maintain ecological balance, and promote economic development, agricultural irrigation water quality standards are specially implemented.

Standard Value of Basic Control Items for Water Quality of Irrigation Water in Farmland

Serial Number

Project Category

Crop Type

Water Cultivation

Dry Farming

Vegetables

1

Five Day Biochemical Oxygen Demand/(mg/L) ≤

60

100

40,15

2

Chemical Oxygen Demand/(mg/L) ≤

150

200

100, 60

3

Suspended solids/(mg/L)

80

100

60, 15

4

Anionic surfactants/(mg/L)

5

8

5

5

Water temperature/℃ ≤

25

6

pH

5.5-8.5

7

Total salt content/(mg/L)

1000 (non saline alkali)

Land area), 2000 (saline alkali soil area)

8

Chlorides/(mg/L) ≤

350

9

Sulfides/(mg/L) ≤

1

10

Total mercury/(mg/L) ≤

0.001

1l

Cadmium/(mg/L) ≤

O.01

12

Total arsenic/(mg/L) ≤

O01

. 05

0.1

O.05

13

Chromium (hexavalent)/(mg/L) ≤

O.1

14

Lead/(mg/L)

O2

15

Fecal coliform count/(number/100mL)

4 000

4 000

2 000, 1 000

16

Ascaris eggs/(number/L)

2

2, L

Analysis Method for Water Quality Control Projects in Farmland Irrigation

Serial Number

Analysis Items

Measurement Method

Source of Method

1

Biochemical Oxygen Demand (BOD5)

Dilution and Inoculation Method

GB/T 7488

2

Chemical Oxygen Demand

Dichromate Method

GB/T 11914

3

Suspended Matter

Gravimetric Method

GB/T 11901

4

Anionic Surfactants

Methylene Blue Spectrophotometer

GB/T 7494

5

Water Temperature

Thermometer Measurement method using a reverse thermometer

GB/T 13195

6

pH

Glass electrode method

GB/T 6920

7

Total salt content

Gravimetric method

HJ/T5l

8

Chlorides

Silver nitrate titration method

GB/T 11896

9

Sulfides

Methylene blue spectrophotometry

GB/T 16489

10

Total mercury

Cold atomic absorption spectrophotometry

GB/T 7468

11

Cadmium

Atomic absorption spectrophotometry

GB/T 7475

12

Total arsenic

Silver diethyldithiocarbamate spectrophotometric method

GB/T 7485

13

Chromium (hexavalent)

Diphenylcarbazide spectrophotometric method

GB/T 7467

14

Lead

Atomic absorption spectrophotometry

GB/T 7475

15

Copper

Atomic absorption spectrophotometry

GB/T 7475

16

Zinc

Atomic absorption spectrophotometry

GB/T 7475

17

Selenium

2,3-diaminonaphthalene fluorescence method

GB/T 11902

18

Fluorination

Ion selective electrode method

GB/T 7484

19

Cyanide

Silver nitrate titration method

GB/T 7486

20

Petroleum

Infrared spectrophotometry

GB/T 16488

21

Volatile phenol

Distilled 4-aminoantipyrine spectrophotometric method

GB/T 7490

22

Benzene

GB/T 11937

23

Trichloroacetaldehyde

< /p>

Pyrazolone spectrophotometric method

HJ/T 50

24

Acrolein

Gas chromatography

GB/T 11934

25

Boron

Curcumin spectrophotometric method

HJ/T 49

26

Fecal coliform group

Multi tube fermentation method

GB/T 5750-1985

27

Ascaris eggs

Sedimentation and egg collection method

Chapter 3 of the Practical Manual for Agricultural Environmental Monitoring

Water quality - Determination of roundworm eggs in sewage - Sedimentation and egg collection method

Function of testing report:

1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report

2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms

3. Used as a sales report: issuing legally effective testing reports to make consumers more confident

4. Papers and research: Provide professional personalized testing needs

5. Judicial services: providing scientific, fair, and accurate testing data

6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problems

BAIJIAN testing process:

1. Telephone communication and confirmation of requirements

2. Recommend solutions and confirm quotations

3. Mail samples and arrange testing

4. Progress tracking and result feedback

5. Provide reports and after-sales service

6. If urgent or priority processing is required

Our Competitive Edge:

1. The testing industry is fully covered, meeting different testing needs

2. Fully cover the laboratory and allocate localized testing nearby

3. Engineers provide one-on-one services to make testing more accurate

4. Free initial testing, with no testing fees charged

5. Self service order delivery for free on-site sampling

6. Short cycle, low cost, and attentive service

7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc

8. The testing report is authoritative and effective, and is generally used in China