NH-81 High Precision Bench-top Digital Pesticide Residues Quick Tester with Best Price
USD $2,000 - $2,500 /Set
Min.Order:1 Set
Hangzhou Chincan Trading Co., Ltd.
NH-81 High Precision Bench-top Digital Pesticide Residues Quick Tester
Applications
To detect the pesticide residues of organophosphate and carbamates in vegetables, fruits, grain, tea, water and soil.
Principle
Organophosphate and carbamate pesticides could inhibit the activity of acetylcholine enzyme existing in the insect central and peripheral nervous system, cause the accumulation of acetylcholine, and effect the normal conduction; so that make insect die from poisoning. The principle of this insect toxicology is used in the detection of pesticide residues. After adding reagent, we can determine the changing value of absorbance with time at 410nm using spectrophotometer, calculate the inhibition rate, and estimate the degree of organophosphate or carbamate pesticide residue in vegetables. Namely:
Substrate acetylthiocholine(AsCH) is hydrolyzed into thiocholine and acetic acid choline at the presence of acetylcholinesterase (AChE). The color reaction is produced based on thio-choline and 3-Carboxy-4-nitrophenyl disulfide (DTNB), leading to the reaction solution turns yellow which shows an absorption peak at 410 nm. Use spectrophotometer to estimate the inhibitory extent of organophosphate and carbamate pesticides on enzyme activity to know about the extent of pesticide residues ( To represent by inhibition rate) , thus determine the harmfulness.
Technical Specifications
Wavelength: 410±2nm
Standard color developing time: 3 minutes
Rang of inhibition rate :0-100%
Environment temperature: 5~45 ℃
The detection limit :0.1~3 .0 mg / L (organic phosphorus and carbamate)
Standard warm-up time: 3 minutes
Zero transmittance drift: ≤ 0.5% / 3min
Photocurrent drift: ≤ 0.5% / 3min
Operating environment: Indoor / Outdoor / Automobile
Transmittance accuracy: ± 1.5%
Power supply: mains / car power
Repeatability: ≤ 1.0%
Channel error: ± 1.0%
Size: 380 × 240 × 110 mm
Weight: 7.5kg
Key Features
Test methods - enzyme inhibition method
Conform to GB / T 5009.199-2003 and NY/448-2001
Quick test, high accuracy, stable and reliable.
Integral high speed printer
8-channel testing technology
Large LCD screen display
Data logger-automatic data storage of 2000 results
Connects to different types of pc
Human-oriented interface
Intuitive display of apparatus operation status and setting parameters
Keypad beep and Beep alarm
Normally all CHINCAN products are supplied with a warranty of 12 Months from the date of shipment. This warranty is entirely dependent on the following conditions:
1.The following circumstance don't belong to the warranty policy which is Man-made damages caused by improper operations.
2.The instruments must be operated in accordance with our operating guidelines; serviced and maintained on a regular basis in accordance with the terms specified in the relevant user manual.
3. Only approved spare parts should be used in the instruments which bought from CHINCAN and these should be changed on a regular basis as specified in the relevant user manual. Details of the approved spare parts and accessories for each instrument are shown in the user manual or alternatively this information can be obtained from CHINCAN.
Q: What after-sales service can be provided by CHINCAN ?
A: The after-sales service of CHINCAN is divided into two parts: technical support and maintenance.
Q: What about the technical support and maintenence?
A: Sometimes users will get some problems when they operate the instruments which are unfamiliar or first time use, users can send us emails or call us about detailed information. We will provide users solution or operation video.For so many years’ experience, our instruments works well during warranty period. If there any parts are broken during warranty period, we would like to provide spare parts for free.
Q: How to solve the disputes between CHINCAN and customers during the after-sales maintenance?
A: We will be customer oriented,and make concessions in some principles , we will properly handle the disputes to maximize customer's satisfaction.
Established in 2004, Hangzhou Chincan Trading Co., Ltd. is a foreign trading company authorized by Chinese State Department of Foreign Economy & Trade and General Administration of Chinese Customs, which located in Hangzhou city, Zhejiang province, China.
We are a specialist company committed to exporting laboratory instruments, educational apparatus, medical & hospital equipments. With its superior performance, Chincan instruments are sold well throughout the Americas, Asia Pacific, the Middle East, Africa and Europe. With our excellent service, Chincan Trading has won a good reputation from the market.
Cooperative factories which qualified by Chincan come from many provinces and cities across China. All of them need to be ISO certified, Some products have CE.
OEM
We have the experience, capability and R&D resources to offer ovens and incubators OEM service.
Once customer provides us with concept information and detailed specifications, we will notify them of the total cost for design, prototyping, and estimated cost per unit before the project begins.
OEM Service
1. Free logo design, MOQ request accordingly.
2. Outside color, temperature range, shelf adding, etc. Customization is available.
3. Optionals accessories: inert gases inlet valve, vacuum pump, etc.
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