推薦產品
等級
certified reference material
品質等級
CofA
current certificate can be downloaded
包裝
ampule of 20 mL
製造商／商標名
RTC QCI-026
濃度
100% in H2O
技術
TOC: suitable
應用
environmental
形式
matrix material
儲存溫度
2-30°C
一般說明
This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.
應用
Product is suitable for measurement of:
- Biochemical oxygen demand (BOD)
- Carbonaceous BOD (CBOD)
- Chemical oxygen demand (COD)
- Dissolved organic carbon (DOC)
- Total organic carbon (TOC)
準備報告
The solvent for this sample is water. This sample is packaged as a 20 mL concentrate. The sample has been autoclaved for preservation.
PREPARATION INSTRUCTIONS
To prepare solution, partially fill a 1-L volumetric flask with reagent-grade water. Open ampule QC1130-20ML (be careful to avoid cuts on glass) and transfer 10 mL from the ampule into the flask. Fill the volumetric flask to volume with reagent-grade water and mix well. The sample is now ready for immediate analysis.
Analyze the solution to determine BOD or CBOD first. If COD and TOC cannot be determined within two hours after sample preparation, an aliquot should be preserved (pH<2) using 0.2 mL of concentrated sulfuric acid per 100 mL. This aliquot should be stored at 4 degrees Celsius and analyzed as soon as possible within the 28-day maximum holding time.
NOTES: For proper oxygen depletion of BOD and CBOD, the sample should be tested in a dilution series. Use a natural surface water or diluted domestic sewage for seeded dilution water and avoid entrainment of air. For analysis of CBOD, the use of a nitrifying inhibitor is recommended. Be sure to determine the “blank” BOD of your seeded dilution water so that the proper seed correction can be made.
PREPARATION INSTRUCTIONS
To prepare solution, partially fill a 1-L volumetric flask with reagent-grade water. Open ampule QC1130-20ML (be careful to avoid cuts on glass) and transfer 10 mL from the ampule into the flask. Fill the volumetric flask to volume with reagent-grade water and mix well. The sample is now ready for immediate analysis.
Analyze the solution to determine BOD or CBOD first. If COD and TOC cannot be determined within two hours after sample preparation, an aliquot should be preserved (pH<2) using 0.2 mL of concentrated sulfuric acid per 100 mL. This aliquot should be stored at 4 degrees Celsius and analyzed as soon as possible within the 28-day maximum holding time.
NOTES: For proper oxygen depletion of BOD and CBOD, the sample should be tested in a dilution series. Use a natural surface water or diluted domestic sewage for seeded dilution water and avoid entrainment of air. For analysis of CBOD, the use of a nitrifying inhibitor is recommended. Be sure to determine the “blank” BOD of your seeded dilution water so that the proper seed correction can be made.
其他說明
Values of analytes vary lot to lot. Some lots may not contain all analytes.
分析物
描述
5-Day BOD 18 - 230 mg/L
Carbonaceous BOD (CBOD) 18 - 230 mg/L
Chemical oxygen demand (COD) 30 - 250 mg/L
Dissolved organic carbon (DOC) 6 - 100 mg/L
Total organic carbon (TOC) 6 - 100 mg/L
儲存類別代碼
12 - Non Combustible Liquids
水污染物質分類（WGK）
nwg
閃點（°F）
Not applicable
閃點（°C）
Not applicable
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