Chromatography Forum

Hi, all!

I need help!

I am looking for a suitable column for Yokogawa GC 1000. Does anyone familiar with it? I was given with the following spec:

1. The following parameters that are going to be tested with this GC:

· N2 RANGE 0-2/

· CH4 RANGE 40-90/

· AR RANGE 0-1/

· CO2 RANGE 0-2/

· CO RANGE 0-1/

· C2H6RANGE 0-1/

· C3H8 RANGE 0-1/

· H2\BALANCE

· NO2-NH3RANGE 0-1/

· N2 RANGE BALANCE



2. Capillary Coil #4 (Don't know what does this mean.. )

3. R=50 SEC/10ml N2 0.1 Mpa

4. Length (M)(1/16) 0.46

My understanding is that the length of column is 0.46m with resistance 50sec/10ml, using nitrogen as carrier gas. But what does the 1/16 mean?

Also, I don't think a GC can analyze N2, Ar, H2 since these are the common carrier gas used, am I right?

Really need help...~

Hi, all!

........
2. Capillary Coil #4 (Don't know what does this mean.. )

3. R=50 SEC/10ml N2 0.1 Mpa

4. Length (M)(1/16) 0.46

My understanding is that the length of column is 0.46m with resistance 50sec/10ml, using nitrogen as carrier gas. But what does the 1/16 mean?

Also, I don't think a GC can analyze N2, Ar, H2 since these are the common carrier gas used, am I right?

Really need help...~

2, 3 and 4

seems like capillary coil of switching valve used for introduction of gas sample

1/16 - diameter in fraction of an inch

My interpretation would be that your column is 46cm long and has a diameter of 1/16" the 50seconds at 10 ml/min refers to the time it would take for an un retained peak (Hydrogen) to elute from the column.
Getting such a column is easy , having the right end fittings is the tough bit. Never heard of Yokogawa, hopefully the colmn suppliers have. If not take pictures of the end fittings so you can show the column supplier.
You can analyseall thoses gases but not on one column. Is your GC a multi column unit using more than one carrier gas ? This might also explain why you are looking at Coil (column) 4 ?

My interpretation would be that your column is 46cm long and has a diameter of 1/16" the 50seconds at 10 ml/min refers to the time it would take for an un retained peak (Hydrogen) to elute from the column.
...

In fact it doesn't correspond with column dimensions at all.
If the column is 46 cm long and dia. is 1/16'' then at 10 ml/min time in question is 5.5 s

If the column is 46 cm long and dia. is 1/16'' then at 10 ml/min time in question is 5.5 s

Unless the 1/16" refers to the OD - which would not be unusual for a stainless steel column.

Unless the 1/16" refers to the OD - which would not be unusual for a stainless steel column.

Yes, then we are moving even further away from 50 seconds.

Hi all!

Thanks for the replies.

I've just learnt that Yokogawa GC1000 is a PROCESS gas chromatograph. It is coupled with three detectors and have something call "column switching valve" that allows the user to switch from one column to the other. Unfortunately, the machine is not with me and I am unable to see whether how many column can be attached.

I have never heard of a process gas chromatograph

However, one of the register users in this Chromatography Forum had once mentioned a few types of Yokogawa columns with similar descriptions (have try to contact the author but no reply yet...) and based on his/her post, I am able to interpret the specifications:

1. capillary coil #4 - still don't know what is it

2. R=50sec/10ml N2 0.1Mpa - resistance 50sec/10ml with nitrogen gas as carrier gas, operate at pressure 0.1Mpa

3. Length (M) (1/16) 0.46 - 0.46m capillary length with O.D 1/16 inch

Yet, I am still unable to find any compatible columns (pack/capillary) for it...urgh..help help~

Hi all!

Thanks for the replies.

I've just learnt that Yokogawa GC1000 is a PROCESS gas chromatograph. It is coupled with three detectors and have something call "column switching valve" that allows the user to switch from one column to the other. Unfortunately, the machine is not with me and I am unable to see whether how many column can be attached.

I have never heard of a process gas chromatograph

However, one of the register users in this Chromatography Forum had once mentioned a few types of Yokogawa columns with similar descriptions (have try to contact the author but no reply yet...) and based on his/her post, I am able to interpret the specifications:

1. capillary coil #4 - still don't know what is it

2. R=50sec/10ml N2 0.1Mpa - resistance 50sec/10ml with nitrogen gas as carrier gas, operate at pressure 0.1Mpa

3. Length (M) (1/16) 0.46 - 0.46m capillary length with O.D 1/16 inch

Yet, I am still unable to find any compatible columns (pack/capillary) for it...urgh..help help~

As the Yokogawa user (at least remote as you say) why won't you ask them directly ?
Don't you think that they know their instrument demands re. columns, joints, connectors etc ?

viewtopic.php?f=2&t=23919

please scroll down a bit

Yokogawa refuses to further comment unless they are provided with certain information which I do not have .

The owner is looking for an alternate, compatible column.

Hi, i am using Yokogawa GC 1000 also. For packed column, i purchase from Restek. Never bought capillary column for others before.

May be you can try contact RESTEK on this.Just sent the Column info that you have to them , together with the separation details (chrom) etc.
Hopefully they can offer you equivalent column.

You should always change the complete set of columns instead of one only.

Regards,
Alice