Phosphor is used for postcode tagging dots and on the postage stamps of Great Britain from the 1960’s onwards. Is also present on stamps from Canada (older issues), Finland, Greece, Israel, Mexico (older issues) and the USA.
Shortwave UV 254nm – 266nm is used to check for the presence of phosphorescence. A mini UV lamp is ideal for detection of phosphorous and Camlab have a range of lamps available.
Mini UV Lamps
The afterglow is as follows: 20 seconds for BLUE, 10 seconds for GREEN and 5 seconds for VIOLET.
Shortwave UV can also be used to detect aniline inks, erased pen and fiscal cancellations, repairs to paper thins, added margins to imperforate stamps.
This is a skill that every collector of British stamps has to learn. It is an easy skill, and once learned, you wonder why you couldn’t ever do it before !
-
Mini UV Lamp 365nm Ultra Violet Lamp UVL-4 (Requires 4xAA batteries)£43.34
excl. VAT
£52.01
inc. VAT
-
Mini UV Lamp 254nm Ultra Violet Lamp UVG-4 (Requires 4xAA batteries)£132.28
excl. VAT
£158.74
inc. VAT
-
Mini UV Lamp flashlight 254/365mm UV Lamp UVSL-14P (battery only)£200.70
excl. VAT
£240.84
inc. VAT
-
Mini UV Lamp flashlight 365nm UV Lamp UVL-4F (4xAA batteries required)£50.17
excl. VAT
£60.20
inc. VAT
-
Hand-Held UV 8W Lamp 365nm/White Model UVL-18£593.01
excl. VAT
£711.61
inc. VAT
- Hand-Held UV 8W Lamp 302nm/White Model UVM-18
£725.22
excl. VAT
£870.26
inc. VAT
- Hand-Held UV 6W Lamp 254nm/White Model UVS-16
£383.18
excl. VAT
£459.82
inc. VAT
£478.97
excl. VAT
£574.76
inc. VAT
- Hand-Held UV 6W Lamp 365nm/White Model UVL-16
£481.60
excl. VAT
£577.92
inc. VAT
