I've just gotten back from being in the Peace Corps for 3 years, and have an unopened bottle of Heico NH-5 Fixer in my darkroom. Does anyone know if is still good or have any advice for how to find out?(posted 8199 days ago)Also, I'm looking for advice on good film and paper developers - I have 4x5 Tri-x film, and will be using Oriental VC Fiber paper. Thanks!