Product ID: NTK-TTLR or NTK-TTSR

Use this kit for quantitative nitrate analysis of essentially any aqueous sample, from wastewater to soil and plant extracts.  This test tube format kit is to be used with your colorimeter or spectrophotometer capable of reading at 540nm± 20nm.  NECi's recombinant Nitrate Reductase drives all Nitrate to Nitrite using NADH, which reacts with color reagents under acidic conditions to produce a visible color.  

Nitrate Reductase Based Test Tube Kits are Available in different Ranges:

25 Sample or 100 Sample Analysis 

Choose either Freshwater or Saltwater Analysis

NECi Nitrate Reductase (AtNaR):

• Recombinant AtNaR fermented according to strict QA/QC procedures with reagent grade water and analytical grade sugars and salts, ensuring lot-to-lot consistency, reliablility, and stability 

• Purified to Homegeneity by Immobilized Metal Affinity Chromatography Guarantees Greater than 95% Purity

• Freeze Dried Stable Indefinitely at -20°C, 2 Years at 4°C, 1 Year at 25°C (RT)

• Stable in Working Solution for 1 Year at -20°C, 2 Weeks at 4°C, 8 Hours at 25°C (RT)

• Small Sample Volume and Enzyme Reagents Offer Sustainability and No Hassle Shipping, Storage and Disposal for Your Laboratory 

Product ID: NTK-MPLR or NTK-MPSR

Use this kit for quantification of nitrate in essentially any aqueous sample.  Reactions occur on a 96-well microplate provided with the kit.  This test kit is based on the enzyme Nitrate Reductase (NaR), catalyzing the reduction of nitrate to nitrite using the natural electron donor NADH.  The nitrite reacts with color reagents under acidic conditions to produce a visible color. The concentration of nitrate in the original sample is determined by measuring absorbance with a microplate reader using a 540 nm filter, versus nitrate concentration in nitrate standards.

Nitrate Reductase Based Microplate Test Kits are Available in different Ranges:

Choose either Freshwater or Saltwater Analysis

Product ID: NTK-WLR or NTK-WSR

Easy to Use, Quick and Reliable Results, Non-Toxic

Obtain near lab-quality results within 30 minutes

Non-toxic kit contents ensure safety for humans and the environment
No laboratory experience or materials needed

Available in Standard Range (0.5 ppm - 10.0 ppm Nitrate-N) and Low Range (0.1 ppm - 2.0 ppm Nitrate-N)*

• For drinking water, well water, agricultural runoff, and other types of water, choose the standard range test kit 
• For ambient, unimpaired environmental sources of water, choose the low range test kit

Available in kit sizes to measure nitrate content of 5, 10, 25, or 50 samples

*Nitrate is reported in different units depending on your field of use and where you live.

Use these colorimetric test kits to measure nitrate content in:

Well water, drinking water, agricultural water, pond water
Streams, lakes, rivers, oceans, wetlands, and other environmental watersheds
Wastewater, industrial manufacturing effluent, and more
Aquarium, Hydroponic, Aquaculture, Aquaponic water (please inquire if different range of nitrate detection is required other than what is offered)

Two Ways to Improve Your Nitrate Testing Experience

Use our New Handheld Photometer

Check out our new handheld photometer which displays and tracks nitrate and phosphate results digitally on Android mobile devices.  Obtain near lab-quality data without needing laboratory equipment or experience.  Our Introductory Photometer Package is complete with the photometer, instructions, and a 10-sample test kit pack of your choice.  Use your own Android mobile device, or add-on a control pad tablet for tracking, storage, and sharing of data.

Download the Free Nitrate Color Slider App

For a free interactive color-matching tool, use our free nitrate color slider app for easier visual analysis of colorimetric results.  Instead of using the color chart provided in the instructions, simply match the color on the screen with the color of each sample for more precise numerical values.  This app is available Online and in theGoogle Play store.

Product ID: NTK-S

Nitrate for Maximum Yield and Minimal Fertilizer Cost

Quick and Reliable Results, Easy to Use, Environmentally Benign

For high crop yield, enough Nitrate needs to be available in the soil, while over-application results in wasted fertilizer.  Make best use of manures in NMP compliance, practice good environmental stewardship to prevent groundwater nitrate runoff.  Use this kit for pre-sidedress soil nitrate testing for appropriate nutrient application.

This kit will detect 0 ppm - 50 ppm Nitrate-N (50 ppm Nitrate-N = 250 lb N/acre)

Choose from kits for nitrate analysis of 5, 10, 25, or 50 samples. Obtain results in less than one hour.  All you need is a pair of scissors, pen, and marker.  Kit includes everything you need to test and is easy to use, no lab training is required.  

Two Ways to Improve Your Nitrate Testing Experience

Use our New Handheld Photometer

Check out our new handheld photometer which displays and tracks nitrate and phosphate results digitally on Android mobile devices.  Obtain near lab-quality data without needing laboratory equipment or experience.  Our Introductory Photometer Package is complete with the photometer, instructions, and a 10-sample test kit pack of your choice.  Use your own Android mobile device, or add-on a control pad tablet for tracking, storage, and sharing of data.

Download the Free Nitrate Color Slider App

For a free interactive color-matching tool, use our free nitrate color slider app for easier visual analysis of colorimetric results.  Instead of using the color chart provided in the instructions, simply match the color on the screen with the color of each sample for more precise numerical values.  This app is available Online and in theGoogle Play store.

Reaction occurs within 30 minutes.  Choose from test kits in packs of 5, 10, 25, or 50. All you need is a garlic press or similar device to squeeze out sample liquid from your plants.

Two Ways to Improve Your Nitrate Testing Experience

Use our New Handheld Photometer

Check out our new handheld photometer which displays and tracks nitrate and phosphate results digitally on Android mobile devices.  Obtain near lab-quality data without needing laboratory equipment or experience.  Our Introductory Photometer Package is complete with the photometer, instructions, and a 10-sample test kit pack of your choice.  Use your own Android mobile device, or add-on a control pad tablet for tracking, storage, and sharing of data.

Download the Free Nitrate Color Slider App

For a free interactive color-matching tool, use our free nitrate color slider app for easier visual analysis of colorimetric results.  Instead of using the color chart provided in the instructions, simply match the color on the screen with the color of each sample for more precise numerical values.  This app is available Online and in theGoogle Play store.

Product ID: NTK-DF

Ensure Your Livestock Feed is Safe for Consumption

Easy to Use, Quick and Reliable Results, Environmentally Benign

Use the NECi Nitrate Test Kit for Dry Forage to prevent livestock toxicity from excess nitrate, often caused by drought conditions.  Obtain accurate and reliable results in less than an hour.  These enzyme based test kits are non-toxic and environmentally benign.

Drought may lead to excess nitrate uptake leading to toxicity

The USDA maintains a "US Drought Map" showing areas of concern. View HERE.

Test for nitrate levels in dry forage to check for nitrate toxicity.  Drought may cause stress in plants, encouraging excess nitrate uptake.  Too much nitrate may lead to illness or even death in livestock, especially pregnant and lactating animals or young animals.

Test for nitrate levels in very dry livestock feed when samples are too dry to squeeze liquid out (dry hay, corn stalks, drought-stricken crops) to check for nitrate toxicity.  This kit will detect 0 - 9000 ppm nitrate (0 - 2000 ppm nitrate-N or up to 0.9% N).   All you need is a blender or grinder to prepare your samples, a pen, marker, and a pair of scissors.  No lab experience needed, kits are ready and easy to use.

Available in kit sizes to measure nitrate content of 5, 10, 25, or 50 samples

Two Ways to Improve Your Nitrate Testing Experience

Use our New Handheld Photometer

Check out our new handheld photometer which displays and tracks nitrate and phosphate results digitally on Android mobile devices.  Obtain near lab-quality data without needing laboratory equipment or experience.  Our Introductory Photometer Package is complete with the photometer, instructions, and a 10-sample test kit pack of your choice.  Use your own Android mobile device, or add-on a control pad tablet for tracking, storage, and sharing of data.

Download the Free Nitrate Color Slider App

For a free interactive color-matching tool, use our free nitrate color slider app for easier visual analysis of colorimetric results.  Instead of using the color chart provided in the instructions, simply match the color on the screen with the color of each sample for more precise numerical values.  This app is available Online and in theGoogle Play store.

Product ID: NRPk-HDA-3At

Previously sold as:  DA-ARK-1

Compatible with High Capacity Stand Alone Discrete Analyzers (Thermo Scientific™  Aquakem™)

AtNaR & NADH Reagents for minimum 300 assays

Packs include 3.0 units of AtNaR (freeze-dried form), 2mg NADH (solid form), and 1 vial of enzyme diluent

Contact us to design a kit tailored to your machine (if not listed) for no extra charge.

Recombinant Plant NADH Nitrate Reductase (AtNaR)

• For analysis run between 20 – 45°C
• Highly stable in working solution
• Manufactured in Pichia pastoris 
• Shelf-life of up to 6 months at room temperature
• Highest Specific Activity AtNaR on the market
• High specificity reduces false positives
• Suited for 3%+ NaCl environments

For more detailed information about this kit, please refer to the instruction sheet.

More information about Thermo Scientific Discrete Analysis Systems can be found at www.thermofisher.com/discreteanalysis

Product ID: NRPk-DA-1At

Previously sold as: DA-ARK-1 OIP

Compatible with Tabletop Discrete Analyzers such as Unity (Westco) Smartchem, OI Analytical Discrete Analyzers, Thermo Scientific™ Gallery™, and other machines with a similar format.

AtNaR & NADH Reagents for 50-200 Samples

Packs include 1.0 unit of AtNaR (freeze-dried form), 0.7 mg NADH (solid form), and 1 vial of enzyme diluent

Contact us to design a kit tailored to your machine (if not listed) for no extra charge.

Recombinant Plant NADH Nitrate Reductase (AtNaR)

• For analysis run between 20 – 45°C. 
• Highly stable in working solution
• Manufactured in Pichia pastoris 
• Shelf-life of up to 6 months at room temperature
• Highest Specific Activity AtNaR on the market
• High specificity reduces false positives
• Suited for 3%+ NaCl environments

For more detailed information about this kit, please refer to the instruction sheet.