I used the ratio of 10:1 by volume and no difference was found.

> -----Original Message-----
> From: DEBASHIS MAJI 
> Date: Tue, 9 Mar 2010 00:54:57 +0530
> To: General MEMS discussion 
> Subject: [mems-talk] PDMS mixing
> Dear all,
>
> I have a small question regarding mixing up of the PDMS base and the hardner
> in 10: 1 ratio. Generally it is specified as mixing up of the two in 10:1
> ratio by weight. But can anyone tell me whether their will be a lot of
> difference in the PDMS property if one use the ratio of 10:1 by volume ( eg.
> 10ml : 1ml ). Normally we can correlate the weight ratio to volume ratio,
> but in that case can anyone please tell me the density of the base and
> the hardner ? The density of the PDMS is about 0.97 kg/m3 .
>
> Thanks in advance.
>
> Debashis Maji,