How do I measure and calibrate at low level turbidity?
Turbidity is a measure of the cloudiness of water and is used as a key water quality indicator. This can…
Tag: Hach
What are SpecCheck standards and can they be used for calibration?
SpecCheck standards are solid gel secondary standards produced by Hach. They are for use with their photometers. They are presented…
What vials and sample cells are compatible with my Hach DR1900?
The DR1900 by Hach is a portable spectrophotometer with over 220 pre-programmed test methods, accepting the Hach and the Lange…
What vials and sample cells are compatible with my Hach DR900?
The DR900 by Hach is a robust, portable colorimeter, capable of performing many dozens of different tests, supporting the Hach…
What vials and sample cells are compatible with my Hach DR300?
The DR300 by Hach is a robust, portable single parameter colorimeter. It is the follow on from the Pocket colorimeter…
Hach Sample Cells – Explained
Hach have a wide variety of sample cells for use in their colorimeters and spectrophotometers. The correct type of sample…
How do turbidity meters work? What does ratio and non ratio mean in a turbidity meter?
Turbidity meters are used to quickly measure the turbidity (or cloudiness) of water, caused by suspended solid particles. Understanding how…
Which methods can be accelerated by using the HT200S?
With high speed digestion technology (HSD), the HT200S is a great solution for the busy lab, speeding up digestion times…
Q. I need to test water for Iron, which one do I choose?
A.Trying to pick out the correct test can prove to be a challenge. There are a number of different tests…
Why is my turbidity reading higher/lower than expected?
For an accurate measurement of turbidity a sample vial is placed in an nephelometer meter called a turbidimeter or turbidity…
Measuring high levels of free chlorine in water
Measuring high levels of free chlorine can be problematic; Colorimeters used to test free chlorine are based on a colour change…
Macherey – Nagel VISOCOLOR Powder Pillows
Macherey-Nagel have a selection of VISOCOLOR Powder Pillows available for free Chlorine, total Chlorine and pH photometric determination.