Overview; Description Of Buttons; Operating Principles - VWR TIR 200 Mode D'emploi

Overview

Reagent
Turbidity Standards TSK TIR 200:
Standard < 0.1 NTU, 20 NTU, 200 NTU, 800 NTU

Description of Buttons

On
Switching the Turbiditymeter on or off
Off
Mode
Confirm a selection with the [MODE] key.
Eine Messung durchführen.
Read
Press the [ ! ] key to turn
!
the display backlight on or off

Operating principles

The instrument measures turbidity in the range 0.01 to 1100 NTU/FTU featuring auto rang-
ing. The light source is an infrared LED (light emitting diode) with a wavelength of 860 nm.
The emitted light is reflected by turbidity in the sample. The scattered light will be detected
at an angle of 90° by a photodiode.
This principle is part of ISO 7027.
The international Reference Standard for turbidity is a Formazin solution. Results related to
these standards are indicated as FNU (Formazine Nephelometric Units).
VWR ver 1 01/2018
Quantity cat. no.
1 Set 84209.600
9