The Programís SOPs do not provide information on the use of any specific chemical kits or meters.  The Coordinator recommends that whatever type of kit you choose to use, always follow the manufactures instructions and recommendations for its use and care.  If you are using a meter; these must be calibrated at regular intervals and always before using them in the field. When submitting chemical data always describe the kit you are using.  The description should include the manufacturer, kit-type, range, model number etc.