Differential refractometer

Refractometers

Published in Béla G. Lipták, Analytical Instrumentation, 2018

Two types of process refractometers have evolved, one based on refraction angle changes, and one based on critical angle changes (Table 49f). The differential refractometer measures the refraction angle changes as a function of sample RI. This is generally done by holding the incident light angle constant wherein Snell’s law becomes n = (1/sinβ).

Effect of nutritional supplements on bio-plastics (PHB) production utilizing sugar refinery waste with potential application in food packaging

View Article

Journal Information

Published in Preparative Biochemistry and Biotechnology, 2019

Abhishek Dutt Tripathi, Tek Raj Joshi, Suresh Kumar Srivastava, Kinaoush Khosravi Darani, Shankar Khade, Jyoti Srivastava

The average molecular weight (Mn) and Polydispersity index (Mw/Mn) of the extracted polymer by sodium hypochlorite (30.0% v/v) and chloroform dispersion were determined by GPC (gel permeation chromatography), using a pump (Wayers 715 Ultra WISP, Canada), a differential refractometer detector at 30 °C (Waters 410, Canada), and a 60 cm PL gel 5 L styragel column with a linear range of molecular weight of 200–2,000,000 mol/g at 25 °C. Monodisperse polystyrene was used as the molecular weight standard. A 100 mL portion of a 0.1% w/v PHB solution was injected for each analysis. Chloroform was used as the mobile phase at a flow rate of 1.0 mL/min.

Differential refractometer

Explore chapters and articles related to this topic

Refractometers

Effect of nutritional supplements on bio-plastics (PHB) production utilizing sugar refinery waste with potential application in food packaging