ULBON HR Series (Polyimide Coated Fused Silica)

The ULBON HR series consists of ten types of stationary phases designed for general analyses and a wide range of specialized analytical purposes. We also stock columns with a variety of lengths, inner diameters, and stationary phase film thicknesses in order to meet your requirements.

Features

1. Highly inert inner surfaces of columns enable high precision quantitative analyses.
   Adsorption points on the inner surfaces of columns have been completely removed through thorough processing. As a result, free acids and amines, which are easily adsorbed, are eluted without interactions with active surfaces.
2. No exfoliation and bleeding of stationary phases enabling high sensitivity analyses.
   In HR series columns, stationary phases are firmly chemically bonded to surfaces resulting in almost no exfoliation and bleeding of stationary phases. This enables high sensitivity analyses.
3. Maximum operating temperatures higher than those of ordinary WCOT columns.
   In comparison with WCOT columns, maximum operating temperatures are approximately 70°C higher for this series (chemically bonded columns). The maximum operating temperature for the HR-20M (corresponds to PEG-20M) series is 240°C, while that for HR silicone series columns is 330°C (except HR-1701 and HR-17 columns).

Stationary Phase Specifications

Column	Stationary Phase	Polarity	Maximum Operating Temperature	Applications
HR-1	Dimethyl silicone resin	None	330℃	General analyses
HR-52	5% Phenylmethyl silicone	Low	330℃	General analyses
HR-17	50% Phenylmethyl silicone	Medium	300℃	Medicines, saccharides, TMS derivatives, phenols, steroids, and solvents
HR-1701	7% Cyanopropyl 7% Phenylmethyl silicone		280℃
HR-20M	Polyethyleneglycol	High	240℃	General analyses, polar compounds, esters, ketones, and alcohols