REFERENCE GEAR FOR REFRACTOMETERS Russian patent published in 1997 - IPC

FIELD: technical physics, refractometric methods of analysis of structure and composition of various media, usage in the capacity of fixture to refractometers of various designs. SUBSTANCE: in reference gear for refractometers basic scale of values of refractive index is made uniform and reference scales of percentage of dry substance by saccharose (Brix)S%, fraction of total mass of sugar in must S g/l. density of grape must d, mass concentration of common extract in wire M g/cu.dm, volume fraction of alcohol in wine distillate Ao %, fraction of total mass of alcohol in solution Am %, percentage of protein in cerium of blood B%, density of urine ρ, percentage of dry substance in milk COMO % are marked together with basic scale so that with match of mark of mobile slider with corresponding values of basic scale there are fulfilled conditions: S%= 0.084.82353((Δn))-1801.9215 (Δn)²+4696.422((Δn)³)-6427.26((Δn)⁴); S g/l= -13,4740+6011.0707((Δn))+42160.7076((Δn)²)-870247.0293((Δn)³)+5115532.367((Δn)⁴); d= 1+2.5909((Δn))+2.6194((Δn)²)-22.5355((Δn)³)+675182((Δn)⁴); M g/cu. dm= 69.86.82940 ((Δn))+760.5370((Δn)²); Ao%=0.167+1950.1355((Δn))-1-319.1346((Δn)²)-1089801.979x ((Δn)³)+56410823.47((Δn)⁴); B%=-1.7946+587.947((Δn))+377.4705((Δn)²)-5330.9026((Δn)³) +1291766.4707((Δn)⁴); ρ=1+2.5((Δn)); COMO%=567.21497((Δn)); Am%=0.0008+ 1587.5918((Δn))-8228.9184((Δn)²)-938480,1716((Δn)³)+51667800.191((Δn)⁴), where Δn= n20D