Used to determine the colour acceptability of aviation gasoline that has been dyed for easy identification of grade. Lovibond® glass filters are available for minimum and maximum limits of red, blue, green, brown and purple dyes.
Lovibond® disc 4/78 (Blue, Green, Brown, Purple Min/Max) Lovibond disc 4/79 (Red Min/Max)
Nessler 2250. Pair of 200ml cylinders, Nessler Daylight 2000+
It is stongly recommended that the Nessler Daylight 2000+ be used when access to good quality north daylight is not available.