Kit contains 1.8, 18 and 180 NTU standards required to calibrate the Hach Ratio/XR and Ratio 2000 instruments in the lower ranges. The deluxe kit also contains sealed secondary standards of each value.

Kit contains 0.0 and 10 NTU standards required to calibrate the Hanna HI 93703 and LP 2000 instruments. The deluxe kit also contains sealed secondary standards of each value.

Kit contains 0.0 and 40 NTU standards required to calibrate Orbeco-Hellige instruments. The deluxe kit also contains sealed secondary standards of each value.

Kit contains 0.5, 5.0 and 40 NTU standards required to calibrate EPA 180.1 instruments. The deluxe kit also contains sealed secondary standards of each value, specify instrument make and model.

Kit contains 1.8, 18, 180 and 1800 NTU standards required to calibrate the Hach Ratio/XR and Ratio 2000 instruments in the full range. The deluxe kit also contains sealed secondary stds of each value.

Kit contains 1.0 and 10 NTU standards required to calibrate the Lamotte 2020WI instrument. The deluxe kit also contains sealed secondary standards of each value.

Kit contains 1.8, 18 and 180 NTU standards required to calibrate the Hach 18900 instrument. The deluxe kit also contains sealed secondary standards of each value.