(1) In order to perform accurate and reproducible analysis, wash the cell sufficiently before use. We recommend a cleaning solvent for washing contaminated cells (Cat. No. 6220-33021, cell washing liquid DCN 90). We also recommend that an ultrasonic washer is used as the most efficient washing method. Use with 2 – 10 % cell cleaning solvent.

Do not put the cell directly into a metal washing tank and do not use with a high output of ultrasonic as this may break the cell. Wash only in a cell washing basket and use an ultrasonic washer with power rating less than 80 W.


(2) The cell surface adsorbs gases from the air so it is recommended the cells are used immediately after cleaning. If the cells are not used for a long period of time, soak in distilled water or keep them in the dedicated storage case.


(3) Do not touch the transparent surface directly with your fingers. Grease from the fingers can be transferred to the cell and adversely affects the analysis.


(4) Always use the cell in its respective cell position and use with the same transmitted light direction in the cell holder for repeatable measurement with little error.


(5) Avoid measurement of hydrofluoric acid, strong phosphoric acid or alkaline solutions. It is possible to measure weak aqueous alkaline solution. However, make the measurement as quickly as possible and wash the cell immediately after measurement.


(6) Do not use a screw cap cell or other capped cell for heating or freezing etc., this will result in increased pressure inside the cell causing it to break.


(7) Do not lift the long optical path length cells by holding just at the center; it may break with risk of injury. Hold with both hands at each end.