This is an example of a pharmaceutical analysis done by Pfanstiehl Labs. As you can see it is more detailed than Consumer Labs. Note that they test for purity.

 

 

D-Glucosamine HCl &

D-Glucosamine Sulfate?2KCl

Imported USP Grade

 

Specifications

General

Reference

Country of Origin

China

Test (USP Methods)

HCL

Sulfate?2KCl

Appearance

White crystalline, free-flowing powder

Content Assay

99.0-101.0%

98.0-102.0%

Specific Rotation [a] D 20

+70.0° to +73.0°

+50.0° to +52.0°

Transmission(20% water solution-450nm)

>90%

>90%

Absorption  (20% water solution-280nm)

<0.25 a.u.

N.A.

Loss on Drying

=0.1%

=0.5%

Residue on Ignition

=0.1%

27.0% to 29.0%

pH

3.5 - 5.0

3.5 - 5.0

Chloride

16.2-16.7%

11.1% to 12.3%

Sulfate

=0.24%

15.5-16.5%

Potassium

NA

11.7-13.0%

Sodium

NA

No pronounced yellow color

Organic Volatile Impurities

Meets USP requirements

Bulk Density

=0.75 g/ml

=0.85 g/ml

Particle Size

100% thru 30 mesh

Iron

=10 ppm

Heavy Metals

=10 ppm

Lead

=0.5 ppm

Arsenic

=0.5 ppm

Biological Testing (USP)

Specification

Total Plate Count

=1000 CFU/g Max.

Yeast & Mold Count

=100 CFU/g Max.

E. Coli (in 1 gram)

Negative

Salmonella & S. Aureus

Negative