The Exaxol turbidity standard with a heavy metal-free formulation comes in a glass bottle and is an ideal solution to have in chemical laboratories and research facilities. Application: For Laboratory use only o NTU (Nephelometric Turbidity Units)

The Exaxol turbidity standard-formazin stock with a heavy metal-free formulation comes in a glass bottle and is an ideal solution to have in chemical laboratories and research facilities. Application: For Laboratory use only 4000 NTU (Nephelometric Turbidity Units) Shake well before use

The Exaxol turbidity standard 1 features a metal-free formulation and comes in an impact-resistant bottle. It is mainly designed to use in chemical laboratories and research facilities. Application: For Laboratory use only Hydrazine Sulfate 1%

The Exaxol total hardness standard with a heavy metal-free formulation comes in a poly bottle and is an ideal solution to have in chemical laboratories and research facilities. Application: For Laboratory use only