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COD Low Range Reagent ISO Method, 25 Vials HI93754F-25

Producer: HANNA Instruments

SKU: HANNA-HI93754F-25 Category: Hanna experimental measuring equipment

– Used for measuring COD from 0 to 150mg/L

– For use with HI833xx and HI801 meters

– Obligatory used with SAMPLE DESTRUCTOR

– By method ISO at @610nm

- Pack 1 tube for 1 time use, easy to use

– Supplied with COA

– Printed with batch number and expiration date

CONVENIENT PACKAGING, EASY TO USE

– 1 box of COD reagent HI93754F-25 contains 25 reagent vials.

– High quality reagents complying with ISO 15705 method.

– Reagents used for samples with a measuring range of 0 to 150 mg/L (ppm) O₂.

– Hanna vials contain approximately 3 mL of pre-filled reagent, so the user only needs to add a small amount of sample.n Pre-measurement preparation time is significantly reduced and time-consuming reagent preparation or glassware cleaning procedures are eliminated, while also saving chemicals and processing time.

– COD reagent tubes and caps are designed to prevent reagent spillage during use.

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.

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 1000 mg/L	1mg/L	±15 mg/L ±4% results	HI93754G-25

SPECIFICATIONS

COD scale	0 to 150 mg/L₂
Number of measurements	25 measurements
Method	ISO 15705
Used for measuring machines	– HI83314 – HI83399 – HI801 – COD meter at wavelength @420nm
Using	– 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	one year