Reagents for Macherey Nagel water test systems
NANOCOLOR® Reagent Tube Tests
Compact Multiparameter Photometer PF-12 Plus
For easy and fast measurements
Using NANOCOLOR® bar coded test tubes, the measurement is automatically performed after inserting the cuvette into the cuvette slot. The contact with any dangerous chemicals is avoided because the measurement is performed directly in the test tube. This guarantees maximum safety for the user.
Reliable and comparable results
The reaction basis of NANOCOLOR® tests is based on international approved standard methods like DIN-, EN-, ISO-, EPA- and APHA.
Easy handling and highest accuracy
All NANOCOLOR® tests contain accurate predosed reagents, that are directly ready to use and calibrated accessories.
The perfect test for every request
For all important parameters in water and wastewater analysis, a large number of tests with different ranges is available.
No mix up of tests Every
NANOCOLOR® test box is equipped with a colour coded label and can be identified clearly by its colour.
A full overview of all reagents and equipment can be found in the NANOCOLOR Analysis System Brochure.
|Ash content/ residue on ignition||The ash content is determined in accordance with DIN 54370: 10 g filter paper is weighed after ignition in a platinum crucible at 800 °C. Results are expressed as % of the original paperweight.|
|Dry bursting strength||For determination of the dry bursting strength the paper is clamped over a rubber diaphragm with an area of 10 cm2. The strain on the paper is then increased by applying increasing air pressure, until the paper bursts. The dry bursting strength in accordance with DIN 53113 is stated in KPa.|
|Tensile strength||For determination of the tensile strength, a paper strip (measuring 180 x 15 mm) is subjected to vertical strain by applying increasing weight. The force expended at the moment of tearing represents the tensile strength. Results are expressed in N/15 mm.|
|Thickness||The thickness of a paper is measured with a touch pressure device. Especially for soft and creped papers, it is important that the touch pressure is not too high. Otherwise, the papers are compressed and a falsely low thickness is obtained.|
|Filtration speed||For determination of the filtration speed in accordance with DIN 53137 the duration of flow of 10 mL distilled water through a quadrant-folded, freely suspended filter circle of 12.5 cm diameter is measured. Results are expressed in seconds.|
|Basis weight||The basis weight is determined for a sample of 10 x 10 cm. It is measured in g/m2.|
|Gurley test||The Gurley test measures the time required for filtration of 100 mL air at a water column pressure of 31 mm. The sample has an area of ¼ sq. inch.|
|Wet strength||The wet strength of a paper is a measure for the mechanical stability of a paper in a wet or moist condition. For example, it can be determined as the tensile strength or the bursting strength (see above).|
|Pore size||The retention efficiency of a filter paper is influenced by several factors. Since filter papers are deep bed filters, one usually refers to mean particle retention.|
|Capillary rise according to Klemm||The capillary rise according to Klemm indicates how far a strip of filter paper is moistened in 10 min when vertically dipped with one end into distilled water (20 °C)|
|Particle retention||Particle retention refers to the efficiency of filter papers in retaining certain precipitates. It is characterised by the permeability of the paper for precipitates of iron(III) oxyhydrate, lead sulfate, calcium oxalate and barium sulfate.|
|filter cake ignition and quantitative determination of the residue (gravimetric analysis)||ashless filter papers|
|analysis of the filtrate; it is important that no interfering substances are extracted from the filter paper||ashless filter papers or glass fibre filters|
|mechanical removal of the filter cake from the filter, e.g. with a jet from a wash bottle or with a spatula||wet-strengthened filters, (hardened filter papers)|
|visualisation of small amounts of light precipitates||black filter paper (MN 220)|
|technical filtration or need for large cuts||technical filter papers or thick filter papers|
|retention of very fine precipitates||slow filter papers|
|retention of coarse precipitates and fast filtration||fast filter papers|
|filtration of strongly acidic or strongly basic liquids||glass fibre filters|
|filtration of aggressive liquids (e.g. strong oxidants)||glass fibre filters|
|need for very low metal ion blanks of the filter (e.g. for investigation of air-borne particles)||quartz fibre filters|
|accelerated filtration with constant retention efficiency||creped paper|
|filtration at increased pressure or strong mechanical load (e.g. heavy filter cake).||thick technical filter papers|
|strongly absorbent paper, no special wet strength required||chromatography papers|
Note: Please save your special methods and measurement data prior to the update. More information can be found in the customer information
For old photometers (PF-11 etc.) asking for a blank guidence is avaiable here.