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![Nitrite standard solution, 250 mg/L NO<sub>2</sub>-N, APHA, 500 mL, Nitrite standard solution, 250 mg/L NO<sub>2</sub>-N, APHA, 500 mL,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
For the verification and validation of nitrite determinations.
€60.60
![Mercuric nitrate standard solution, 0.141 N, 500 mL, Mercuric nitrate standard solution, 0.141 N, 500 mL,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
For chloride determination by mercury nitrate burette titration using a diphenylcarbazone indicator.
€59.30
For checking the accuracy of formaldehyde determinations Simple accuracy checks waste minimisation Reliable results
€57.70
To verify the accuracy of biochemical oxygen demand (BOD) determinations; 3,000 mg/L glucose plus glutamic acid. Package of 16 ampoules of 10 mL each. Simple accuracy check Minimization of waste quantity Reliable results
€57.70
![Nitrogen-Ammonia Standard Solution, 150 mg/L NH3-N, pk/16 - 10 mL Voluette Ampules, Nitrogen-Ammonia Standard Solution, 150 mg/L NH3-N, pk/16 - 10 mL Voluette Ampules,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
For checking the accuracy of TKN regulations Simple accuracy checks waste minimisation Reliable results
€56.50
![Nitrogen-Ammonia Standard Solution, 50 mg/L as NH3-N, pk/16 - 10 mL Voluette Ampules, Nitrogen-Ammonia Standard Solution, 50 mg/L as NH3-N, pk/16 - 10 mL Voluette Ampules,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
For checking the accuracy of TKN regulations Simple accuracy checks waste minimisation Reliable results
€56.50
![Calcium Standard Solution, 1000 mg/L, 500 mL, Calcium Standard Solution, 1000 mg/L, 500 mL,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
Standard solutions for ion-selective electrodes (ISE), for laboratory analyses ISE standard solution. Calcium, 1,000 mg/L ± 8 mg/L Ca2+ (NIST). 500 mL bottle Traceable to NIST standard reference materials Designed for use with Hach...
€55.60
![Fluoride Standard Solution, 10 mg/L, 500 mL, Fluoride Standard Solution, 10 mg/L, 500 mL,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
Standard solutions for ion-selective electrodes (ISE), for laboratory analyses ISE standard solution. Fluoride, 10.0 mg/L ± 0.2 mg/L F- (NIST). 500 mL bottle Traceable to NIST standard reference materials Designed for use with Hach...
€50.00
![Nitrate Standard Solution, 100 mg/L, 500 mL, Nitrate Standard Solution, 100 mg/L, 500 mL,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
Standard solutions for ion-selective electrodes (ISE), for laboratory analyses ISE standard solution. Nitrate, 100 mg/L ± 1 mg/L NO3-N (NIST). 500 mL bottle Traceable to NIST standard reference materials Designed for use with Hach...
€44.20
![Fluoride Standard Solution, 1 mg/L, 1 L, Fluoride Standard Solution, 1 mg/L, 1 L,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
Standard solutions for ion-selective electrodes (ISE), for laboratory analyses ISE standard solution. Fluoride, 1.00 mg/L ± 0.02 mg/L F- (NIST). 1 L bottle Traceable to NIST standard reference materials Designed for use with Hach...
€43.90
![Standard solution, benzotriazole, 500 mg/L, 100 mL, Standard solution, benzotriazole, 500 mg/L, 100 mL,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
To verify the accuracy of benzotriazole determinations
€42.00
![Standard solution, sodium thiosulfate, stabilized, 0.00246 N, 500 mL, Standard solution, sodium thiosulfate, stabilized, 0.00246 N, 500 mL,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
For the determination of chlorine by drop count titration. Use in the Hach CN-65 test kit (225401). 500 mL bottle
€40.70
![Ammonia Standard Solution, 100 mg/L, 500 mL, Ammonia Standard Solution, 100 mg/L, 500 mL,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
Standard solutions for ion-selective electrodes (ISE), for laboratory analyses ISE standard solution. Ammonium, 1,000 mg/L ± 20 mg/L NH3-N. 500 mL bottle Traceable to NIST standard reference materials Designed for use with Hach portfolio...
€37.10
![Standard solution, sodium hydroxide, 4.5 N, 1 L, Standard solution, sodium hydroxide, 4.5 N, 1 L,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
For the determination of volatile acids after esterification
€36.50
![Colour standard solution, 500 Pt Co Units, 1 L, Colour standard solution, 500 Pt Co Units, 1 L,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
Colour measurement standard for analytical quality assurance.
€365.00
![Sodium hydroxide standard solution, 0.100 N (N/10), 1 L, Sodium hydroxide standard solution, 0.100 N (N/10), 1 L,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
For the determination of acidity by burette titration. 1 litre bottle
€36.50
![Sodium hydroxide standard solution, 0.0227 N, 1 L, Sodium hydroxide standard solution, 0.0227 N, 1 L,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
For carbon dioxide determination by burette titration. Hach method 8233. 1 litre bottle.
€35.20
![Sodium hydroxide standard solution, 0.020 N (N/50), 1 L, Sodium hydroxide standard solution, 0.020 N (N/50), 1 L,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
For the determination of acidity by burette titration. According to method 8219 (methyl orange) and 8010 (phenolphthalein). 1 litre bottle
€34.70
For the determination of Copper, 0.1-8.0 mg/L Cu, and Hardness, Titration and Buret Titration Method.
€34.20
![Sodium Hydroxide Standard Solution, 10 N, 500 mL, Sodium Hydroxide Standard Solution, 10 N, 500 mL,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
For pH adjustment of the sample for ammonia determinations using ion-selective electrodes.
€33.90
![Ammonia Standard Solution, 1 mg/L, 500 mL, Ammonia Standard Solution, 1 mg/L, 500 mL,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
Standard solutions for ion-selective electrodes (ISE), for laboratory analyses ISE standard solution. Ammonium, 1,000 mg/L ± 20 mg/L NH3-N. 500 mL bottle Traceable to NIST standard reference materials Designed for use with Hach portfolio...
€33.90
![Fluoride Standard Solution, 1 mg/L, 500 mL, Fluoride Standard Solution, 1 mg/L, 500 mL,](/themes/Frontend/Fleischhacker/frontend/_public/src/img/no-picture.jpg)
Standard solutions for ion-selective electrodes (ISE), for laboratory analyses ISE standard solution. Fluoride, 1.00 mg/L ± 0.02 mg/L F- (NIST). 500 mL bottle Traceable to NIST standard reference materials Designed for use with Hach...
€33.90