WebThe refractometer is reliable, fast, accurate, and technically easy to use and requires only a single drop of urine. Think of it as a basic necessity. Some solutes, such as acetone, may cause false increases in specific gravity by refractometry, as they increase refraction but are less dense than water. Why is Measuring the MeSH A refractometer is a device which measures the content (brix or sugar, honey, urine, salt, battery fluid) of a solution by the refraction of light. It does so by sampling a small amount of liquid, and looking at its optically. COMPARISON OF URINARY OSMOMETER AND REFRACTOMETER Urine samples were divided into 2 subsamples (trials A and B) for analysis. Do the methods measure the same thing? Coolant refractometers often have a readout that can also be used with car battery fluid to indicate battery condition. Comparison of refractometer and biuret methods for total protein measurement in body cavity fluids. WebRefractometers are especially useful for determining urine specific gravity on veterinary samples because they require relatively small sample volumes. Benson M. Committee refines wrestling safety rules. It determines the liquid's refractive index, which varies depending on the moisture level. WebWhat are the advantages of using a refractometer compared to a Urinometer? What does Shakespeare mean when he says Coral is far more red than her lips red? Bland-Altman plot for refractometry and reagent strips. WebDensity of solution and density of same amount of distilled water are compared at same temperature. McCrossin and Roy12 described the overall correlation between refractometry and hydrometry as good. In studies comparing refractometry with reagent strips, several researchers have suggested that reagent strips are an acceptable alternative to refractometry,1315 whereas others have concluded that they are not.12,1619 Although these findings are contradictory, the interclass Pearson correlation coefficients reported in these previous validity studies might not be the most appropriate statistical approach to use when comparing 2 methods of measurement.20,21 Furthermore, none of these authors assessed the reliability of refractometry, hydrometry, or reagent strips. Bland-Altman plot for refractometry and hydrometry. Fully automated urine chemistry analyzers often use an onboard refractometer to obtain a specific gravity reading. Webrefractometer (r=0.814, p< 0.001) and handheld clinical refractometer (r=0.943, p< 0.001) with OSM. 1988;26(3):195-242. doi: 10.3109/10408368809105890. Urine Subsequently, the use of reagent strips was eliminated.6 Our data support this decision and further suggest that the use of the hydrometer also should be eliminated. (3) For the determination of specific gravity of canine urine the urinometer is often used. Advantages and disadvantages of methods available for measuring urine osmolality has many advantages (Table 1). Sensitivity and specificity of the hydrometer were 88% and 67%, respectively. Refractometers can also measure chemical concentrations, validate mixtures and determine the purity of materials. The calculated 95% limits of agreement indicate that, for 95% of observations, hydrometer values will be 0.004 less than or 0.008 greater than refractometer values. It is also cost-effective and wont require any special training. official website and that any information you provide is encrypted disadvantages of Urinometer. eCollection 2018. We also use third-party cookies that help us analyze and understand how you use this website.