LABORATORY TESTING SERVICES

Physical analysis service
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Parameter Unit Method
Total Solids, TS mg/L Standard Methods for the Examination of Water and Wastewater, APHA, AWWA & WEF,23rd ed., 2017, Part 2540 B.
Total Suspended Solids, TSS mg/L Standard Methods for the Examination of Water and Wastewater, APHA, AWWA & WEF, 23rd ed., 2017, Part 2540 D.
Total Dissolved Solids, TDS mg/L Standard Methods for the Examination of Water and Wastewater, APHA, AWWA & WEF, 23rd ed., 2017, Part 2540 C.
Total Volatile Solids, TVS mg/L Standard Methods for the Examination of Water and Wastewater, APHA, AWWA & WEF, 23rd ed., 2017, Part 2540 E.
Settleable Solids, SS mg/L Standard Methods for the Examination of Water and Wastewater, APHA, AWWA & WEF, 23rd ed., 2017, Part 2540 F.
ปริมาณของแข็งแขวนลอยระเหยได้ (Volatile Suspended Solids, VSS) mg/L Standard Methods for the Examination of Water and Wastewater, APHA, AWWA & WEF, 23rd ed., 2017, Part 2540 E.
Chemical analysis service
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Parameter Unit Method
ซีโอดี (Chemical Oxygen Demand, COD)* mgO2/L Standard Methods for the Examination of Water and Wastewater, APHA, AWWA & WEF, 23rd ed., 2017, Part 5220 D.
ไนไตร์ท (Nitrite, NO2-) mg/L Ferrous sulfate method by HACH DR 3900
ไนเตรต (Nitrate, NO3-) mg/L Cadmium Reduction method by HACH DR 3900
ปริมาณฟอสฟอรัสทั้งหมด (Total Phosphorus, TP) mg/L In-house method based on APHA, AWWA & WEF, 23rd ed., 2017, Part 4500-P.
ปริมาณไนเตรเจนในรูปทีเคเอ็น (Total Kjeldahl Nitrogen, TKN) mg/L In-house method based on APHA, AWWA & WEF, 23rd ed., 2017, Part 4500-Norg C.
ซัลไฟด์ (Sulfide) mg/L S2- Methylene Blue Colorimetric Method by HACH, 8131
คลอรีนอิสระ (Free Chlorine) mg/L Cl2 USEPA DPD Method, HACH 8021 and 10069
คลอไรด์ (Chloride) mg/L Cl- In-house method based on AWWA-2017, Part 4500 B.
ปริมาณออกซิเจนที่จุลินทรีย์ใช้ในการย่อยสลายสารอินทรีย์ (Biological Oxygen Demand, BOD) mg/L Standard Methods for the Examination of Water and Wastewater, APHA, AWWA & WEF, 23rd ed., 2017, 4500-O G. and 5210 B.
แอมโมเนีย-ไนโตรเจน (NH3-N mg/L Standard Methods for the Examination of Water and Wastewater, APHA, AWWA & WEF, 23rd ed., 2017, Part 4500 – N org C.
Microbiology Analysis Service
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Parameter Unit Method
โคลิฟอร์มทั้งหมด (Total Coliform) MPN/100 mL ,MPN/g dry weight In-house method based on AWWA-2017, Part 9221 B.
ฟีคอลโคลิฟอร์ม (Faecal Coliform) MPN/100 mL ,MPN/g dry weight In-house method based on AWWA-2017, Part 9221 E.
เอสเชอริเชีย โคไล (Escherichia coli) MPN/100ml ,MPN/g dry weight In-house method based on AWWA-2017, Part 9221 F.
เอสเชอริเชีย โคไล (Escherichia coli) CFU/100 mL ,CFU/g dry weight In-house method based on AWWA-2017a, Part 9221: Colony-count technique.
Clostridium Perfringens CFU/100 mL ,CFU/g dry weight In-house method based on ISO 7937 (2004) และ ISO 14189 (2013).
แบคเทอริโอเฟจ MS2 (Bacteriophage MS2) PFU/mL PFU/g dry weight In-house method based on EPA-2001, Part 1601.
ไข่พยาธิและปรสิต (Helminth egg and Helminth egg) No. egg/L No. egg/g dry weight In-house method based on SOP Helminth Test (Ascaris, Trichuris and Taenia), University of Kwazulu-Natal (2008).
สกัดดีเอ็นเอ (DNA extraction) - Phenol- chloroform method and DNeasy PowerSoil kit.
การตรวจวิเคราะห์ทางภาคสนาม
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Parameter Unit Method
pH - pH meter
Dissolved Oxygen mg/L Dissolved Oxygen (DO) meter
Oxidation-reduction potential, ORP mV Oxidation-reduction potential (ORP) meter
Conductivity μS/cm Conductivity meter
อุณหภูมิ (Temperature) °C Standard Methods for the Examination of Water and Wastewater, APHA, AWWA & WEF, 23rd ed., 2017, 2550 B.