bilirubin standard test kit comprising bilirubin conjugate in a base of bovine serum albumin for laboratory and research use in linearity evaluation of test equipment, total albumin standard test kit comprising albumin and bovine gama for laboratory research use in calibrating albumin analyzers; uric acid standard kit consisting of uric acid, for laboratory and research in calibrating serum uric acid analyzers; electrolyte standard test kit consisting of sodium, potassium, chloride and lithium, for laboratory and research use for calibrating serum electrolyte analyzers; multi chemistry standard test kit consisting of sodium, potassium, chloride, glucose, urea nitrogen, creatinine, calcium, phosphorus, magnesium and triglyceride, for laboratory and research use for calibrating clinical chemistry equipment; multi-enzyme linearity test kit consisting of asparate aminotansferose, alanine aminotransferase, alkaline phosphatase, lactate dehydrogenase, creatine phosphokinase, gamma glulamyltransfease and alpha-amnlase for laboratory and research use for performing linarity evaluation tests of enzymes; carbon dioxide standard test kit consisting of sodium carbonate for laboratory and research use for performing linarity evaluation tests of serum ultraviolet and color method; chemistry reference kit consisting of sodium, potassium, chloride, glucose, urea nitrogen, reatinine, calcium, phosphorus, magnesium, and triglyceride in a liquid, bovine protein base for laboratory and research use in linearity evaluation or calibration of serum chemistry test systems; cholesterol reference test kit consisting of cholesterol and uric acid in a bovine protein matrix for laboratory and research use in lienarity evaluation of calibration or serum uric acid and cholesterol test systems