I have a Kodak Colour thermometer which has got a big line of fluid at the very top of the scale and a big line of blank space in the middle -- due to years of neglect, probably sitting at the wrong angle or cross-country travel at the wrong angle, etc.

I put it in the freezer and then when it warmed up, it now has several disconnected lines and the big line at the top seems unchanged.

I have two other thermometers: a Paterson and an Omega that agree to a half degree C.

Should I just dispose of the Kodak? The fluid seems blue. Can it just be thrown out without special handling?