The coefficient of thermal expansion of borosilicate glass over the temperature 0 - 300°C is 3.3 x 10-6/°C. This is very low when compared with other glasses and metals. That is why, borosilicate glass is often called low expansion borosilicate glass. Specific heat Specific heat between 25°C and 300°C is average to be 0.233Kcal/Kg, °C
This procedure is applicable for of all high performance liquid chromatography installed in quality control laboratory. 3.0 RESPONSIBILITY 3.1 Doing: Technical Assistant 3.2 Checking: Executive/Manager 4.0 ACCOUNTABILITY Head of the Department 5.0 PROCEDURE 5.1 For system cleaning 5.1.1 After completion of analysis, clean the HPLC as follows.
An alternative is to use buffered mobile phase with pH from 5.0 to 7.0. Ammonium acetate buffer pH 5.8, which is compatible with LCMS, was found to be able iii
• 30 mm filters are recommended for large sample size s – while for typical LC and GC use 13 mm is the optimum size. • 25 mm is most often used and very common when su fficient sample is available and the larger hold li t bl Page 13 up volume is not a problem.
specialized PTFE lined containers—has led us to use the more commonly available borosilicate glass test tubes for routine HG-AAS analyses. While the literature often suggests soaking vessels in acidic solutions before trace metal analysis [11-13], a useful evaluation or quantification of the benefit of this
Glass surface Glass surface LSM Height image (3D) 5.0 µm 5.0 Height: 10.0 m nm 43 m 43 m Height: 1 µm Height: 60.0 nm 5.0 m 43 m Height 1 m LSM Height image (3D) Results from Observing Vial Surfaces with a Scanning Probe Microscope (SPM) TORAST-H™ Bio Vial Superhydrophilic polymer (non-ionic) Surface treatment PP surface Chemical bond
Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (≈3 × 10 −6 K −1 at 20 °C), making them more resistant to thermal shock than any other common glass.
High Performance Liquid Chromatography (HPLC) is a form of column chromatography that pumps a sample mixture or analyte in a solvent (known as the mobile phase) at high pressure through a column with chromatographic packing material (stationary phase). The sample is carried by a moving carrier gas stream of helium or nitrogen.
JG Finneran 9-103 Clear Borosilicate Glass Standard VOA Vial with White Polypropylene Open Top Closure and 0.125" PTFE/Silicone Septa, 24-414mm Cap Size, 40mL Capacity (Pack of 100) 5.0 out of 5 stars 1
At present, high-performance liquid chromatography (HPLC) represents a useful alternative to gas chromatography (GC), because it is a sensitive method that is easier to utilize after improvements related to the derivatization of fatty acids: for example, nitrophenylhydrazides and 4-bromomethyl-7-methoxycoumarin derivatives .
Here’s what we love about borosilicate glass - it’s clear, easy to clean, inert, economical, chemical and corrosion resistant and is a thermal champion. From laboratory/research and development up to full production, glass components and systems are available in a wide range of sizes and designs to build a custom solution based on the
(10%/100) X 15.5 = 0.1 X 15.5 = 1.55 The required HLB of our oil phase is the sum of these numbers or 7.85 Let's make the Oil Phase more complex. Let's suppose that your oil phase contains: Soybean (Glycine Soja) Oil 11% Caprylic/Capric Triglyceride 5% Grape (Vitis Vinifera) Seed Oil 1% Jojoba (Buxus Chinensis) Oil 1%
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This SOP is applicable for the procedure to be followed in HPLC analysis and documentation and to ensure that Good Laboratory Practices are followed in the HPLC analysis. 3.0 RESPONSIBILITY Officer/ Executive - Quality Control 4.0 ACCOUNTABILITY Manager – Quality Control. 5.0 PROCEDURE
The ultraviolet detection wavelength was set at 276 nm. The calibration curve was linear over a concentration range of 0.05–5.0 μg/mL. The intra-day and inter-day accuracy for three quality controls (QC) samples was 93.48–107.74% and 92.61–96.58%, respectively; the precision was less than 9%.
