China C vs Quali-C - is it really worth the cost?

[whitenoise]

I'm currently taking normal China ascorbic acid in capsules. A spec sheet for this products mentions (amongst other things):

Heavy metals <3ppm
Lead <2ppm
Iron <2ppm
Copper <5ppm
Specific rotation +21.210
Residue on ignition 0.06%

Now should I wish to swap to Quali-C, this is in the region of x5 more expensive.

So my question is it really worth it? It's not like it has x5 more bioavailablity or anything.

Pauling mentions in HTTLAFB just to stick with plain old ascorbic acid without any extras (such as rose hips, bioflavonids etc) that might ramp up the price.

Interested on your thoughts

[pamojja]

[Blanko]

NOW brand powder is very inexpensive and is certified kosher. I assume kosher certification means there's organized third-party oversight to ensure standards are being met or exceeded. I normally trust kosher certification.

[ofonorow]

Most of the manufactured vitamin C consumed in the world comes from China, and if the plant is ISO certified, I have to qualms about using Chinese vitamin C.

The only issue I am aware of is that vitamin C is L-ascorbate. There are manufacturing processes that produce equal amounts of D- and L- ascorbates, so these products would contain about 50% of the vitamin C reported on the label. We posted that Chinese experiment that uses polarized light to examine the chirality of vitamin C. Ergo, at least some vitamin C products exist that include D-ascorbates.