Chemical preparations containing enzymes for scientific purposes, namely, for agricultural purposes, or DNA analysis, or bio-security purposes or forensic purposes; chemical preparations for scientific purposes, namely, for agricultural purposes, or DNA analysis, or bio-security purposes, or forensic purposes; diagnostic preparations other than for medical or veterinary purposes; chemical reagents for non-medical purposes; enzymes and buffers for non-medical scientific and research purposes, namely, for agricultural purposes, or DNA analysis, or bio security purposes or for forensic purposes; chemical preparations for scientific purposes, namely, dilution solutions for diluting nucleic acids, buffering nucleic acids, or preserving nucleic acids and used for non-medical purposes, namely, for agricultural purposes, or DNA analysis, or bio-security purposes, or forensic purposes; chemical preparations for scientific purposes, namely, chemical preparations which facilitate the release of nucleic acids, other than for medical or veterinary purposes