Rxi®-5Sil MS (Fused Silica) Columns by Restek Corp.

"I appreciate the low column bleed at high temperatures. Restek has been my go-to company for capillary columns for over 25 years!"

"The quality of Restek GC columns used to be good. But recently, the quality has come down. Even for new columns, we see packing materials come out during blank runs. I hope Restek pay attention to quality of GC columns going forward."

"I am very happy with this column as I have not observed any bleeding or any other problems with it. I have obtained very reproducible results. It has been used for a wide range of applications and had no need to change the column."

"Medical grade glues are vey hard to analyze and we find that Restek columns are best for our testing processes. Everything is very reproducable. Our only issue is that the glues wear out the columns faster than other products so we would like a more heavy usage column."

"This column has been great for my analyses. Very robust and capable of higher temperatures than competitive brands. Low bleed in mass spec as well. Customer service and sales team are incredibly helpful and I always receive products from Restek quickly"

"Reproducible results, good quality, great technical support and easy to find applications to different compounds."

"These columns perform just as expected. We use these columns every day and they hold up to our standards."

"I have been working in Industry (Environmental and Food/Beverage) for 32 years and over that time period have tried many manufacturers columns for a multitude of applications. You can't beat this column for separation, ease of quick install, low bleed (non-existent for me applications), longevity - I have had columns that run daily in for over a year without loss of separation and peak quality and sensitivity. They are priced competitively and I have never had to wait for a backorder on these columns. Restek - keep up the great work and thanks for the helpful technical support over the years."

"The columns we purchase from Restek are high quality and produce excellent results with expected reproducibility. They save us time and effort because they are so consistent and the verification process is greatly reduced whenever we change a column."

"A very good column for with excellent separation and low bleed. It handles a wide range of samples and continues to perform well."

"Robust column when used with integral guard column. Good resolution, low column bleed"

"Sales representative attended very well, not only during the purchase but after-sales support"

"High quality of separations, long lifetime of capilllary column."

"very low bleed and a very stable baseline behaviour. furthermore good inertnes for medium and polar compounds column to column reproducabillity is excellent."

"Very high quality column. In use for a lot of applications on several GCMSn systems in combination with large volume injection (until 200 ul). Very stable! Applications of Chlorobenzenes, OCB's PCB'PAH's NP herbicids, triphosphates etc. After 300 injections still complete sepration of Benzo9b) and benzo(k)antracene."

"Excellent products are being provided by Restek. I am highly satisfied."

"This product is used for separating oxime silylated sugars by GC. "