Go to homepage
Notepad
Shopping basket €0.00*

Calibrating and Cleaning

All preparations, which are used for the determination of measured values and for the cleaning and preparation of electrodes, are grouped here. These include calibration solutions for pH and conductivity, as well as cleaning and storage solutions for pH electrodes.

Filter products

A clear, empty test tube with a rounded base and beaded rim.
Test tube 100 × 16 mm Ø
Simple test tube with beaded rim suitable for pH electrodes

€0.79*
White bottle with label: DRAK Aquaristik buffer solution pH 7, 100 ml. The label shows three coloured Erlenmeyer flasks (red, green, blue).
pH buffer solution (4, 7 and 9)
VOLUME: 100 ml | pH VALUE: pH 7 (green colored)
For the calibration of pH electrodes

Content: 0.1 Litre (€109.50* / 1 Litre)

Variants from €5.95*
€10.95*
White plastic bottle with blue label, text "3M Potassium Chloride Solution" and manufacturer's information.
Potassium chloride solution for redox and pH combination electrodes
CONCENTRATION: 3 molar | VOLUME: 100 ml
Refilling & storing redox and pH electrodes

Content: 0.1 Litre (€84.00* / 1 Litre)

Variants from €5.25*
€8.40*
White bottle with blue-red label. "Cleaning solution with pepsin" from DRAK-Aquaristik. The bottle contains 100ml of cleaning fluid.
Pepsin-based cleaning solution - protein remover
VOLUME: 100 ml
For removing protein-containing deposits from pH and redox electrodes

Content: 0.1 Litre (€109.50* / 1 Litre)

Variants from €5.95*
€10.95*
A 155mm x 16mm glass tube with a clear glass screw cap. The tube stands vertically in the centre of the picture against a white background.
Glass tube with screw cap 155 mm × 16 mm
Replacement for the measuring tubes supplied with many water tests.

€0.95*
White plastic bottle "DRAK 1413 µS/cm conductivity", 50 ml. Label with blue background, logo and text.
Calibration solution conductivity 1413 µS/cm
VOLUME: 50 ml
To calibrate your conductivity meter

Content: 0.05 Litre (€119.00* / 1 Litre)

€5.95*
White plastic bottle with blue label for DRAK Diaphragm Cleaner. Labelling: Cleaning solution with thiourea for pH and redox electrodes, 100ml.
Cleaning solution with thiourea - diaphragm cleaner
VOLUME: 100 ml

Removal of silver sulphide deposits in the diaphragm of electrodes

Content: 0.1 Litre (€109.50* / 1 Litre)

Variants from €5.95*
€10.95*
A flexible AQUA-NOA cleaning brush, approx. 50 cm long, with a brush head and a red guard at the end, tied together with a cable tie.
AQUA-NOA Cleaning brush for Lily-Pipes
DIAMETER: 12/16 mm
Flexible cleaning brushes for Lily-Pipes in 12/16 and 16/22 mm

€10.95*
Black bottle with a red lid and a blue label. The label is labelled Aqua Noa cleaning concentrate. Underneath is an underwater picture with plants.
AQUA-NOA Powerful cleaning concentrate 1 litre
Cleans tech & deco of algae and organic soiling

€15.95*