Easivial

Manufactured by Agilent Technologies

Sourced in United Kingdom

EasiVials are pre-cleaned sample vials designed for analytical laboratories. They provide a consistent and reliable solution for storing and transporting liquid samples. EasiVials are made from high-quality borosilicate glass and are available in a range of sizes to accommodate different sample volumes.

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Lab products found in correlation

Gpc sec software, by Agilent Technologies (1 mentions) Infinity 2 mds instrument, by Agilent Technologies (1 mentions) Deuterated solvents, by Bruker (1 mentions) Agilent 1260 infinity 2 mds, by Agilent Technologies (1 mentions) Dpx 300, by Bruker (1 mentions) Dpx 400, by Bruker (1 mentions) Pl aquagel oh 8 μmcolumn, by Agilent Technologies (1 mentions)

Close spelling variants of this product

EasiVial PS-H 4mL (3 citations) EasiVial PS-M (2 citations)

5 protocols using easivial

Copolymer SEC Analysis in DMF

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SEC of copolymers
containing n_GA ≥ 50 mol % was performed
using DMF as the eluent. SEC was carried out using an Agilent Infinity
II 1260 MDS instrument equipped with differential refractive index
(DRI), viscometry (VS), dual-angle light scatter (LS), and multiple
wavelength UV detectors. The system was equipped with 2× PLgel
Mixed D columns (300 mm × 7.5 mm) and a PLgel 5 μm guard
column. The eluent was DMF containing 5 mmol of NH₄BF₄ run at 1 mL/min at 60 °C. Poly(methyl methacrylate)
standards (Agilent EasiVials) were used to create a third-order calibration
between 1,020,000 and 1,840 g mol^–1. Analyte samples
were filtered through a 0.22 μm nylon membrane before injection.

Little A., Ma S., Haddleton D.M., Tan B., Sun Z, & Wan C. (2023). Synthesis and Characterization of High Glycolic Acid Content Poly(glycolic acid-co-butylene adipate-co-butylene terephthalate) and Poly(glycolic acid-co-butylene succinate) Copolymers with Improved Elasticity. ACS Omega, 8(41), 38658-38667.

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Polymer Characterization by SEC-MALS

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The polymers were
measured with an Agilent Infinity II MDS instrument with differential
refractive index (DRI), viscometry (VS), dual angle light scatter
(LS), and multiple wavelength UV detectors. The system was equipped
with 2 x PLgel Mixed C columns (300 mm × 7.5 mm) and a PLgel
5 μm guard column, with CHCl₃ as the eluent. Samples
were run at 1 mL/min at 30 °C. Poly(methyl methacrylate) and
polystyrene standards (Agilent EasiVials) were used for calibration.
Ethanol was added as a flow rate marker. Analyte samples were filtered
through a nylon membrane with a 0.22 μm pore size before injection.
Experimental molar mass (M_n) and dispersity
(Đ) values of the synthesized polymers were
determined by conventional calibration using Agilent GPC/SEC software.

Moro S., Spencer S.E., Lester D.W., Nübling F., Sommer M, & Costantini G. (2024). Molecular-Scale Imaging Enables Direct Visualization of Molecular Defects and Chain Structure of Conjugated Polymers. ACS Nano, 18(18), 11655-11664.

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Polymer Characterization by NMR and SEC

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¹H NMR spectra
were recorded on Bruker DPX-300 and DPX-400 spectrometers using deuterated
solvents purchased from Sigma-Aldrich. Chemical shifts are reported
relative to residual non-deuterated solvent. Size exclusion chromatography
(SEC) was carried out in dimethylformamide (DMF) and run on an Agilent
1260 Infinity II-MDS instrument equipped with differential refractive
index, dual wavelength UV detectors, viscometry and light scattering
detectors. The system was equipped with 2× PLgel mixed D columns
(300 × 7.5 mm) and a PLgel 5 μm guard column. The eluent
is DMF with 5 mM NH₄BF₄ additive. Samples were
run at 1 mL·min^–1 at 50 °C. Poly(methyl
methacrylate) (Agilent EasiVials) were used for calibration. Analyte
samples were filtered through a nylon filter with 0.22 μm pore
size before injection. Experimental molar mass (M_n,_SEC) and dispersity (D̵) values of synthesized polymers were determined by conventional
calibration using Agilent SEC/SEC software. The calibration range
is 500–2,000,000 Da.

Richards S.J., Baker A.N., Walker M, & Gibson M.I. (2020). Polymer-Stabilized Sialylated Nanoparticles: Synthesis, Optimization, and Differential Binding to Influenza Hemagglutinins. Biomacromolecules, 21(4), 1604-1612.

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Polymer Molecular Mass Analysis

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The apparent average molecular masses of the synthesized polymers were calculated using a GPC system (Varian 390-LC, Agilent Technologies, Santa Clara, CA, USA) multi-detector equipped with a differential refractive index detector (RI), a light scattering (LS), and a viscosity detector using a guard column (Varian Polymer Laboratories PLGel, Agilent Technologies, Santa Clara, CA, USA) 5 μm, 50 × 7.5 mm) and two ResiPore column’s of the same type. The mobile phase was DMF with 0.1 wt % LiBr adjusted at a flow rate of 1 mL min⁻¹ while the columns temperature was thermostated to 70 °C. The GPC system was calibrated using narrow poly(methyl methacrylate) (PMMA) standards ranging from 550 to 1,568,000 g mol⁻¹ (EasiVial-Agilent).

Falireas P.G., Negrell C, & David G. (2018). Synthesis and Aqueous Solution Properties of an Amino Bisphosphonate Methacrylate Homopolymer via RAFT Polymerization. Polymers, 10(7), 711.

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Polymer Stability Assessment by GPC

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Gel permeation chromatography (GPC) was used to study the stability of the polymer by measuring its weight average molecular weight. A method similar to that described by Crowley et al. [20 (link)] was used where all standards and samples were prepared at 0.5% w/w concentrations in mobile phase under gentle agitation for 10 h prior to injection. A PL-GPC 50 Model (Varian, UK) was used with a PL-aquagel-OH 8 μm column (Agilent, UK). Samples were compared against standards (EasiVial®, Agilent, UK) to look at qualitative changes in molecular weight. The mobile phase was double-distilled HPLC water (Fisher UK) with 0.1 M sodium nitrate and was pumped at a flow rate of 0.8 ml/min. The column was held at an operating temperature of 35 °C during the analysis.

Shojaee S., Nokhodchi A, & Maniruzzaman M. (2016). Evaluation of the drug solubility and rush ageing on drug release performance of various model drugs from the modified release polyethylene oxide matrix tablets. Drug Delivery and Translational Research, 7(1), 111-124.

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