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COD High Range Reagent 0-15000mg/L (25 Tests) HI93754C-25

Producer: HANNA Instruments

SKU: HANNA-HI93754C-25 Category: Hanna experimental measuring equipment

Thuốc Thử COD Thang Cao 0-15000mg/L (25 lần đo)

– Dùng để đo COD từ 0 đến 15000 mg/L O₂

– For use with HI833xx and HI801 meters

– BẮT BUỘC dùng kèm MÁY PHÁ MẪU

– Theo phương pháp dicromate EPA tại @610nm

– Phân ống sẵn dễ sử dụng, 1 ống dùng cho 1 lần

– Supplied with COA

– Printed with batch number and expiration date

hi93754c-25_newpkg 1 hộp thuốc thử COD HI93754C-25 chứa 25 ống thuốc thử.

Thuốc thử được thiết kế để sử dụng với mẫu có thang đo trong khoảng từ 0 đến 15000mg/L O₂.

Thuốc thử chất lượng cao tuân theo phương pháp EPA 410.4. Trong phương pháp này, phá mẫu bằng nhiệt là quy trình cần thiết để oxy hóa các chất hữu cơ trong mẫu. Trong quá trình phá mẫu, Crom hóa trị VI trong thuốc thử giảm thành Crom III. Lượng crom giảm sau đó sẽ được đo màu. Cường độ màu được xác định bởi một quang kế tương thích và nồng độ COD được hiển thị theo mg/L O₂.

REQUIRED USE WITH SAMPLE DIGESTIONER

In this method, thermal digestion is required to oxidize the organic matter in the sample. During digestion, hexavalent chromium in the reagent is reduced to trivalent chromium. The amount of reduced chromium is then measured colorimetrically. The color intensity is determined by a compatible photometer and the COD concentration is displayed in mg/L (ppm) O₂.

1 ỐNG THUỐC CHO 1 LẦN ĐO

Ống COD Hanna chứa khoảng 3ml thuốc thử đã được phân lượng sẵn nên người dùng đơn giản chỉ cần thêm một lượng mẫu nhỏ.

Vì các ống thuốc đã được phân lượng sẵn, nên thời gian chuẩn bị trước khi đo sẽ giảm đáng kể và loại bỏ được quy trình chuẩn bị thuốc thử hoặc vệ sinh các dụng cụ thủy tinh tốn thời gian, đồng thời cũng tiết kiệm được hóa chất cũng như thời gian xử lý.

Các ống và nắp thuốc thử COD được thiết kế tránh tràn thuốc thử khi sử dụng.

COD MEASUREMENT METHODS

EPA – EPA approved method 410.4 for the determination of COD requires the use of mercuric sulfate (HgSO₄). Mercury sulfate is included in the EPA reagent vials to reduce interference from chloride in the sample. This is a common requirement in wastewater treatment plants and food manufacturing facilities that often have high chloride concentrations in their wastewater. When using EPA reagents, it is important to properly dispose of the vials after use, as mercury is harmful to the environment and should be recycled.

Dichromate – The dichromate method is adapted from the EPA and ISO standard methods for determining COD, used to measure COD concentrations up to 1500 mg/LO₂. For samples with high concentrations in the range of 0 to 15000 mg/LO₂, dichromate reagent can be used for more accurate COD determination. It is important to dispose of the ampoules after use because mercury is harmful to the environment, so recycling should be used.

Mercury free – For those who do not want to use mercury chemicals, they will use mercury-free reagents to determine COD. The reagents will be more susceptible to chloride interference, because they do not contain mercury sulfate. When using mercury-free reagents, the post-use processing will be easier because they are not harmful to the environment.

ISO – The ISO standard approving method 15705 for the determination of COD also requires the use of mercuric sulfate (HgSO₄) to reduce chloride interference. Also contains the same chemical reagent as the EPA method, it is important that ISO ampoules are disposed of after use because mercury is harmful to the environment, so recycling is recommended.

Method	Parameter	The scale (O₂)	Resolution	Accuracy	PLU
EPA	COD LR	0 to 150 mg/L	1mg/L	±5 mg/L ±4% results	HI93754A-25
EPA	COD MR	0 to 1500 mg/L	1mg/L	±15 mg/L ±4% results	HI93754B-25
Dichromate	COD HR	0 to 15000 mg/L	10 mg/L	±150 mg/L ±3% results	HI93754C-25
Mercury free	COD LR	0 to 150 mg/L	1mg/L	±5 mg/L ±5% results	HI93754D-25
Mercury free	COD MR	0 to 1500 mg/L	1mg/L	±15 mg/L ±4% results	HI93754E-25
ISO	COD LR	0 to 150 mg/L	1mg/L	±5 mg/L ±5% results	HI93754F-25
ISO	COD MR	0 to 1500 mg/L	1mg/L	±15 mg/L ±4% results	HI93754G-25

PARAMETER

HI93754C-25
The scale	0 đến 15000 mg/L O₂
Number of measurements	25 measurements
Method	dichromate EPA
Used for measuring machines	– HI83314 (HI83214 đời cũ) – HI83399 (HI83099 đời cũ) – HI801 – Máy đo COD tại bước sóng @610nm
Using	– 1 ống thuốc thử dùng cho 1 lần đo. – Use according to the instructions for use of the respective meter.
Methods of preservation	– Store at room temperature, avoid direct sunlight. – Do not add any chemicals to the reagents. – Do not use expired reagents.
Certificate of Analysis (COA)	Have
MSDS	Have
Guarantee	Are not
Expiry	> 1.5 năm