1 in stock

COD Medium Range Reagent Vials, ISO Method (25 tests) – HI93754G-25

The HI93754G-25 are reagent vials that follow the ISO approved method for the medium range determination of chemical oxygen demand (COD) using a compatible benchtop photometer. These high quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each box for traceability.

  • Pre-dosed reagents for ease of use
  • Supplied with certificate of quality
  • Marked with expiration date and lot number for traceability

255 AED

Estimated delivery: 29 - 30 April

SKU:HI93754G-25

The HI93754G-25 COD kit contains 25 ready-to-use vials containing pre-measured reagents. These high quality reagents follow the ISO approved method 15705 for determination of COD. In this method, a heated digestion is required to oxidize organic matter in the sample. During the digestion, hexavalent chromium in the reagent is reduced to trivalent chromium. The amount of reduced chromium is then measured colorimetrically. The intensity of color is determined by a compatible photometer and the COD concentration is displayed in mg/L (ppm) O2. These reagents are designed to be used with samples that have an expected range of 0 to 150 mg/L (ppm) O2.Hanna vials contain approximately 3 mL of pre-dosed reagent so the user simply needs to add a small quantity of the sample. With pre-dosed vials, test preparation time is dramatically reduced and there is no time-consuming reagent preparation procedure or glassware cleaning. The vials and caps of the COD reagents have been designed to avoid accidental reagent spills. Due to the pre-dosed reagents, the amount of chemicals and handling time is also minimized.

Comparison of Methods

EPA – The EPA approved method 410.4 for COD determination requires the use of mercuric sulfate (HgSO4). Mercuric sulfate is present in the EPA reagent vials to mitigate the interference of chloride in the measurement sample. This is a common requirement for wastewater treatment plants and food manufacturing facilities which tend to have higher concentrations of chloride present in their effluent. When using reagents that follow the EPA method, it is important to treat used vials as hazardous waste, as mercury waste requires recycling.

Dichromate – The dichromate method is adapted from the standard EPA and ISO methods for determination of COD, which are approved to measure COD concentrations ranging up to 1500 mg/L O2. For samples with expected concentrations in the high range of 0 to 15000 mg/L O2, the dichromate reagents can be used for accurate COD determination. It is important to treat used vials as hazardous waste, as mercury waste requires recycling.

Mercury-free – For those who do not wish to handle mercury reagents, our “green, ” mercury-free reagents are available for COD determination. These reagents are more sensitive to chloride interferences, as mercuric sulfate is not present. While the mercury-free reagents are easier to dispose of, they may be unacceptable for reporting purposes.

ISO – The ISO approved method 15705 for COD determination also requires the use of mercuric sulfate (HgSO4) to reduce the interference of chloride. Containing similar chemical reagents as the EPA method, it is important to treat used ISO vials as hazardous waste, as mercury waste requires recycling.

Method

Parameter

Range (as O2)

Resolution

Accuracy

Reagent Code

EPA

COD LR

0 to 150 mg/L

1 mg/L

±5 mg/L ±5% of reading

HI93754A-25

COD MR

0 to 1500 mg/L

1 mg/L

±15 mg/L ±4% of reading

HI93754B-25

Dichromate

COD HR

0 to 15000 mg/L

10 mg/L

±150 mg/L ±3% of reading

HI93754C-25

Mercury-free

COD LR

0 to 150 mg/L

1 mg/L

±5 mg/L ±5% of reading

HI93754D-25

COD MR

0 to 1500 mg/L

1 mg/L

±15 mg/L ±4% of reading

HI93754E-25

ISO

COD LR

0 to 150 mg/L

1 mg/L

±5 mg/L ±5% of reading

HI93754F-25

COD MR

0 to 1500 mg/L

1 mg/L

±15 mg/L ±4% of reading

HI93754G-25

Specifications

SKU HI93754G-25
Name COD Medium Range Reagent Vials, ISO Method (25 tests) – HI93754G-25
Package vials
Quantity 25
Method dichromate ISO

Manuals

COD Medium Range Reagent Vials, ISO Method (25 tests) – HI93754G-25

Bestsellers

pH/EC/TDS Multiparameter Probe for use with HI9814 - HI1285-7

519 AED
The HI1285-7 is a 3-in-1 pre-amplified multiparameter probe that measures pH, EC/TDS, and temperature within a single polypropylene body. The pH portion of this probe is constructed with a cloth junction, maintenance-free polymer gel electrolyte, and a low-temperature glass sensing bulb. The EC/TDS portion of this probe utilizes two stainless steel pins for an amperometric determination of conductivity and total dissolved solids. A built-in temperature sensor ensures that both pH and EC/TDS readings are compensated for temperature variations in both standards and samples. The design consideration for the HI1285-7 is ideal for measuring the pH, EC/TDS, and temperature in greenhouses, hydroponics, and other agricultural applications. The HI1285-7 is designed for use with Hanna’s HI9814 portable multiparameter meter.
  • Pre-amplified pH Electrode
  • Amperometric EC/TDS Sensor
  • CAL Check Compatible

pH/EC/TDS Multiparameter Probe - HI1285-51

519 AED
The HI1285-51 is a 3-in-1 pre-amplified multiparameter probe that measures pH, EC/TDS, and temperature within a single polypropylene body. The pH portion of this probe is constructed with a cloth junction, maintenance-free polymer gel electrolyte, and a low-temperature glass sensing bulb. The EC/TDS portion of this probe utilizes two stainless steel pins for an amperometric determination of conductivity and total dissolved solids. A built-in temperature sensor ensures that both pH and EC/TDS readings are compensated for temperature variations in both standards and samples. The design consideration for the HI1285-51 is ideal for measuring the pH, EC/TDS, and temperature in greenhouses, hydroponics, environmental monitoring, water treatment, and boilers and cooling towers. The HI1285-51 is designed for use with Hanna’s HI9813-51, HI9812-51, and HI9811-51 portable multiparameter meters.
  • Pre-amplified pH electrode
  • Amperometric EC/TDS sensor
  • Built-in temperature sensor

Portable High Range EC/TDS Meter - HI99301

851 AED
The HI99301 is a rugged, portable EC/TDS and temperature meter housed in a case rated for IP67 conditions. It is supplied with a two-ting conductivity probe to allow for high range EC measurements from 0.00 to 20.00 mS/cm and TDS measurements from 0.00 to 10.00 ppt. All readings are adjusted with Automatic Temperature Compensation (ATC) and users are able to adjust the temperature correction coefficient and TDS factor for accurately compensated measurements.
  • One-point Automatic Calibration
  • Adjustable TDS factor
  • Automatic Temperature Compensation

HI5005-01 pH 5.00 Technical Calibration Buffer (1 L)

168 AED
HI5005-01 is a premium quality pH 5.00 technical calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper-proof seal to ensure the quality of the solution. Hanna’s line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.
  • Supplied with Certificate of Analysis
  • Accuracy of ±0.01 pH @ 25℃
  • Temperature chart of the actual pH value at various temperatures printed on each bottle

Hydrazine Reagents (100 tests) - HI93704-01

87 AED
The HI93704-01 are reagents for the colorimetric determination of hydrazine. There are enough reagents for 100 tests to be used with a compatible benchtop or portable photometer. These high quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each bottle for traceability.
  • Pre-made reagents for ease of use
  • Prepared with high-purity chemicals
  • Marked with expiration date and lot number for traceability

Cyanuric Acid Reagents (100 tests) - HI93722-01

184 AED
The HI93722-01 are reagents for the colorimetric determination of cyanuric acid. There are enough reagents for 100 tests to be used with a compatible benchtop or portable photometer. These high quality reagents are manufactured in our state-of-the-art facility and are clearly marked with the lot number and expiration date on each packet for traceability.
  • Pre-dosed reagents for ease of use
  • Supplied with certificate of quality
  • Marked with expiration date and lot number for traceability

Free Chlorine Checker® HC - HI701

218 AED
The Hanna Free Chlorine Checker® bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color. Professional instrumentation incorporates a light source such as an LED or tungsten lamp with a filter and a light sensing detector to precisely determine absorbance and ion concentration. Professional instrumentation offers greater resolution and accuracy but can cost hundreds of dollars. The Hanna Free Chlorine Checker® uses a fixed wavelength LED and silicon photo detector to provide the accuracy of professional instrumentation at the affordable price of a chemical test kit.
  • Compact, Portable Design
  • Built-in Timer
  • One-Button Operation
Back to Top
img
Product has been added to your cart