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Split vs. Splitless Injection 

Restek Corporation
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Split and splitless are the two most commonly used GC injection techniques. While they share some similarities, each is suited to a particular type of analysis. But how do you know which one to use?
In this video, we explore how these two techniques work. We’ll start with split injection, demonstrate the technique in action, and explain what split ratios are. We’ll then switch to splitless injection, show how it differs from split mode, and cover what splitless hold time is and why it matters. Finally, we’ll look at the strengths of each mode to help you choose the right one for your analysis.
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Additional Resources
Calculating Splitless Time using Restek’s EZGC Method Translator | www.restek.com/chromablograph...
Split vs. Splitless Injection GC-MS: A head-to-head evaluation | www.restek.com/chromablograph...
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Restek Recommended Tools & Parts
Restek Inlet Liners | www.restek.com/c/1210
Restek Electronic Leak Detector | www.restek.com/leakdetector
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Connect with Us
Comment on this video and subscribe to Restek's RU-vid channel today at / restekcorp
Website: www.restek.com
Twitter: / restek
Facebook: / restekcorporation
LinkedIn: / restek-corporation

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27 апр 2020

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Комментарии : 33   
@bobbysumarso5965
@bobbysumarso5965 3 года назад
nice, rarely i got information i need with these kind of videos but this one is actually pretty good
@user-gz9kl7dn7m
@user-gz9kl7dn7m 2 года назад
You're the bestest in explanations
@aartigupta2390
@aartigupta2390 2 года назад
Great Explanation 💯💯
@blackyme2889
@blackyme2889 3 года назад
i wish they taught us like this in pharmacy ,,, thank you man you helped me alot
@RestekCorp
@RestekCorp 3 года назад
You are most welcome!
@xI777Ix
@xI777Ix 3 года назад
Restek are beasts when it comes to GC.
@okyoros
@okyoros 2 месяца назад
Thank you for such wonderful explanation.
@willynmbithi5270
@willynmbithi5270 3 года назад
great one,i rememer Dr Shikanga,elaborating the same
@giuseppezedde4553
@giuseppezedde4553 2 года назад
Your videos are a masterpiece! They are truly perfect, I congratulate you. I would be really grateful if you made a video describing all the steps of a gas chromatographic analysis. Thank you very much!
@RestekCorp
@RestekCorp 2 года назад
We'll have some more videos coming very soon looking at some details of both split and splitless injection.
@giuseppezedde4553
@giuseppezedde4553 2 года назад
@@RestekCorp Thank you very much! 👍
@sknagulmeera9633
@sknagulmeera9633 4 года назад
RESTEK is a Backbone to us
@RestekCorp
@RestekCorp 4 года назад
Thank you!
@gazitec
@gazitec 3 года назад
best video ever
@adosar7261
@adosar7261 3 года назад
How gas flow is in volume/time? How can we measure gas volume when it flows?
@jabutosu
@jabutosu Год назад
Very useful
@sknagulmeera9633
@sknagulmeera9633 4 года назад
Thank you for putting knowledge increasing video
@RestekCorp
@RestekCorp 4 года назад
Our pleasure!
@ramonverduzco3522
@ramonverduzco3522 2 года назад
In the diagrams of the inlet it appears that the column protrudes more into the liner for splitless injections versus split injection. Is this correct or am I taking too much from the diagrams? Thanks!
@RestekCorp
@RestekCorp 2 года назад
Column installation distance should not change between split and splitless.
@rajeshunique151
@rajeshunique151 4 года назад
thanks for the video
@halamboha50
@halamboha50 4 года назад
If you could make videos for other injection methods Thanks
@RestekCorp
@RestekCorp 4 года назад
We've some more videos on optimizing split and splitless that are in development. Any particular injection methods you are interested in?
@halamboha50
@halamboha50 4 года назад
@@RestekCorp Thanks for your quick response and I appreciate it. A lot of sample introduction methods in GC can be used such as: 1- Thermal desorption (single vs multi/ two stage) 2- Solid-phase microextraction (SPME)/ Headspace 3- Purge and Trap 4- Cold On-Column Injection 5- Programmable Temperature Vaporizing (PTV) Injection 6- Gas Sampling Valve These are some other sample introduction methods other than split/split injection method. Thanks
@RestekCorp
@RestekCorp 4 года назад
We have several videos in development for SPME right now, and most of the rest of your list are already on our idea list, but we will add the others. Thank you!
@aartigupta2390
@aartigupta2390 2 года назад
In splitless type, why was the vent opened after sometime?
@RestekCorp
@RestekCorp 2 года назад
In splitless, the vent is opened to purge any remaining material from the inlet. Accordingly, it is important to set the time for when that happens correctly. You should allow time, based on flow rate and liner volume, for 1.5 to 2 liner volumes to pass through the inlet, then open the split vent to purge any remaining material.
@aartigupta2390
@aartigupta2390 2 года назад
@@RestekCorp Alright understood. Thanks alot💯
@Meraki.chemsci
@Meraki.chemsci Год назад
Excellent
@thilpanneerpanneer2327
@thilpanneerpanneer2327 Год назад
How to calculate split rato based on column and split flow.
@RestekCorp
@RestekCorp Год назад
It is generally expressed as a ratio of split flow : column flow, so if you have 100 mL/min of split vent flow and 1 mL/min of column flow, you have a split ratio of 100:1.
@user-zf3fm9vd3o
@user-zf3fm9vd3o Год назад
@@RestekCorp problema hello, after replacing the burner, the chromatograph does not start, output 580000, and cannot be set on fire, can you tell me what the problem might be
@thilpanneerpanneer2327
@thilpanneerpanneer2327 11 месяцев назад
Nice explanation sir
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