What does this mean please.

[MentalTwitch]

A certain site lists stuff like this...

CJC1295(receptor)
GHRP-6(Media)
GHRP-6

those are examples, basically what im asking is what is "Media" and "Receptor"
You guys know i do some searching and i did try but couldnt turn anything.

 

[EasyEJL]

those are different gradings of product. heres an example

Human LONG™R³IGF-I (Media Grade)

Purity: > 85 % (by N-terminal sequence analysis)

Molecular Weight: 9110 +/- 2 daltons – confirmed by Mass Spectrometry

N-terminal sequence analysis: 18 residues > 95 % single sequence

Biological Activity: Type 1 IGF receptor binding assay: ED50 > 15 ng/ml
IGF binding protein assay: ED50 > 200 ng/ml
Stimulation of protein synthesis in rat L6 myoblasts: ED50 < 10 ng/ml

Endotoxin: < 0.1 EU/µg


Human LONG™R³IGF-I (Receptor Grade)

Purity: >95 % (by HPLC and N-terminal sequence analysis)

Molecular Weight: 9111 daltons – confirmed by Mass Spectrometry

N-terminal sequence analysis: 18 residues > 95 % single sequence

Biological Activity: Type 1 IGF receptor binding assay: ED50 > 15 ng/ml
IGF binding protein assay: ED50 >200 ng/ml
Stimulation of protein synthesis in rat L6 myoblasts: ED50 < 10 ng/ml

Endotoxin: < 0.1 EU/µg

 

[TripDog]

A certain site lists stuff like this...

CJC1295(receptor)
GHRP-6(Media)
GHRP-6

those are examples, basically what im asking is what is "Media" and "Receptor"
You guys know i do some searching and i did try but couldnt turn anything.

I think receptor grade is at least 90% pure peptide, media is above 80%.

 

[MentalTwitch]

Thanks to both for the fast and perfect response.
Il consider it when looking around.