Instrument Introduction:
This product is designed and manufactured in full accordance with national regulations such as "Determination of Chemical Oxygen Demand in Water Quality - Rapid Digestion Spectrometric Method (HJ/T399-2007)" and "Determination of Ammonia Nitrogen in Water Quality - Nessler's Reagent Spectrometric Method (HJ535-2009)". It is suitable for many domestic and foreign detection standards and has an independent dual path interference free system. It can measure high and low range COD as well as ammonia nitrogen.

Technical parameters:

host Machine	Instrument Name	Chemical Oxygen Demand (COD) Rapid Tester	Instrument model	5B-3C（V8）
	Measuring Item	COD high range	COD low range	Ammonia nitrogen
	Measurement range	（10-10000）mg/L	（2-150）mg/L	（0.02-100）mg/L
	Indication error	COD≤50mg/L， Error ≤± 8%	Error ≤± 8%	Error ≤± 8%
		COD＞50mg/L， Error ≤± 5%
	Minimum detection limit	0.1mg/L	0.1mg/L	0.01mg/L
	Measurement time	20 minutes	20 minutes	(10-15) minutes
	Batch processing volume	16 water samples	16 water samples	20 water samples (expandable)
	repeatability	≤±3%
	Light source lifespan	100000 hours
	stability	＜0.005A/20min
	Anti chlorine interference	CL-]<1000mg/L (no effect) [CL-]<4000mg/L (optional)		——
	Colorimetric method	Colorimetric dish, colorimetric tube
	Store data	12 thousand
	Number of curves	180 items
	Display mode	Color LCD (resolution 320 * 240)
	communication interface	USB/Infrared (optional)
	Power supply mode	220V
eliminate Solution Instrument	Dissolving temperature	165℃±0.5℃	165℃±0.5℃	——
	digestion time	10/15 minutes (optional)	10/15 minutes (optional)	——
	Temperature indication error	≤±2℃	≤±2℃	——
	Uniformity of temperature field	≤2℃	≤2℃	——
	Dissolve time error	≤±2%	≤±2%	——
	time range	1 minute to 96 hours	1 minute to 96 hours	——
	time switch	3 of them	3 of them	3 of them
	timing accuracy	0.2 seconds/hour
	Power supply mode	AC220V±10%/50Hz

Functional features:
1. Rapid measurement: Quickly and accurately measure the chemical oxygen demand (COD) of surface water, reclaimed water, urban sewage, and industrial wastewater;
2. Simultaneously measure water samples: simultaneously measure ammonia nitrogen, COD high range, and COD low range water samples;
3. Independent dual path interference free system: The independent dual path interference free system provides direct concentration reading, high accuracy, long lifespan, and greater stability;
4. Intuitive Navigation System: With an intuitive menu navigation system and a 3.5-inch color LCD screen, user-friendly operation prompts make it easier to use;
5. Automatic calibration storage curve: The instrument has its own calibration function, which can calculate and store curves based on standard samples without the need for manual curve creation;
6. Free switching of display modes: Large and small font display modes can be freely switched, resulting in clearer display data and more detailed parameters;
7. Data transmission: Transfer current and historical data to the computer, supporting USB and infrared wireless transmission (optional);
8. Color comparison method: Supports both dish and tube color comparison methods simultaneously;
9. Built in printer: The instrument has a built-in printer that can print current data and all stored historical data;
10. Equipped with consumables and reagents: Equipped with comprehensive professional consumables and reagents, the work steps are greatly reduced, and the measurement is simpler and more accurate;
11. Independently designed molds: using independently designed non-metallic grinding tools, the whole machine is beautiful and elegant;
12. Large capacity storage: supports historical data storage and viewing function, can store 12000 data;
13. As a professional COD/ammonia nitrogen dual parameter analyzer, it can directly read concentration and provide more precise measurement results;
14. Equipped with a standard digestion device to digest water samples;
15. Adopting a fully Chinese operating mode, which conforms to daily operating habits and is easier to operate and master;