NEW --
Lakeshore Biomaterials announces a new catalog of polymer products with a simplified naming system.
Standard Grade Polymers are maintained in-stock but are only a partial representation of our polymer
library. Please contact us for a complete listing of current inventory.
Click any polymer for more technical specifications,
or expand all for a printable list of specifications and old product name.
Click here for Polymer Name Description
100 DL 7E
0.60 - 0.80
100 / 0
12 - 16 months
Previous Name: 100 DL High IV
Appearance: White to yellow pellets
Inherent Viscosity: 0.60 - .80 dL/g
Residual Monomer: 2.0% maximum
Tin Content: 200 ppm maximum
End Group: Ester
Molecular Weight, Mw: Report Mw, Mn and Polydispersity
8515 DLG 7E
0.60 - 0.80
85 / 15
5 - 6 months
Previous Name: 8515 DL High IV
Appearance: White to yellow pellets
Inherent Viscosity: 0.60 - .80 dL/g
Copolymer Mole Ratio
d,l-lactide 80-90% Mole
glycolide 10-20% Mole
Residual Monomer: 2.0% maximum
% d,l-lactide Report Result
% glycolide Report Result
Tin Content: 200 ppm maximum
End Group: Ester
Molecular Weight, Mw: Report Mw, Mn and Polydispersity
7525 DLG 7E
0.60 - 0.80
75 / 25
4 - 5 months
Previous Name: 7525 DL High IV
Appearance: White to yellow pellets
Inherent Viscosity: 0.60 - .80 dL/g
Copolymer Mole Ratio
d,l-lactide 70 - 80% Mole
glycolide 20 - 30% Mole
Residual Monomer: 2.0% maximum
% d,l-lactide Report Result
% glycolide Report Result
Tin Content: 200 ppm maximum
End Group: Ester
Molecular Weight, Mw: Report Mw, Mn and Polydispersity
6535 DLG 7E
0.60 - 0.80
65 / 35
3 - 4 months
Previous Name: 6535 DL High IV
Appearance: White to yellow pellets
Inherent Viscosity: 0.60 - .80 dL/g
Copolymer Mole Ratio
d,l-lactide 60 - 70% Mole
glycolide 30 - 40% Mole
Residual Monomer: 2.0% maximum
% d,l-lactide Report Result
% glycolide Report Result
Tin Content: 200 ppm maximum
End Group: Ester
Molecular Weight, Mw: Report Mw, Mn and Polydispersity
5050 DLG 7E
0.60 - 0.80
50 / 50
1 - 2 months
Appearance: White to yellow pellets
Inherent Viscosity: 0.60 - .80 dL/g
Copolymer Mole Ratio
d,l-lactide 45 - 55% Mole
glycolide 45 - 55% Mole
Residual Monomer: 2.0% maximum
% d,l-lactide Report Result
% glycolide Report Result
Tin Content: 200 ppm maximum
End Group: Ester
Molecular Weight, Mw: Report Mw, Mn and Polydispersity
5050 DLG 5E***
0.45 - 0.55
50 / 50
1 - 2 months
Previous Name: 5050 DL High IV***
Appearance: White to off-white granular powder
Inherent Viscosity: 0.45 - .55 dL/g
Copolymer Mole Ratio
d,l-lactide 45 - 55% Mole
glycolide 45 - 55% Mole
Residual Monomer: 2.0% maximum
% d,l-lactide Report Result
% glycolide Report Result
Tin Content: 200 ppm maximum
End Group: Ester
Molecular Weight, Mw: Report Mw, Mn and Polydispersity
5050 DLG 1A
0.05 - 0.15
50 / 50
1 - 2 weeks
Previous Name: 5050 DL 1A
Appearance: White to off-white granular powder
Inherent Viscosity: 0.05 - .15 dL/g
Copolymer Mole Ratio
d,l-lactide 46 - 52% Mole
glycolide 48 - 54% Mole
Residual Monomer:
% d,l-lactide 1.2% max
% glycolide 0.3% max
Tin Content: 200 ppm maximum
End Group: Acid
Molecular Weight, Mw: Report Mw, Mn and Polydispersity
5050 DLG 2A
0.15 - 0.25
50 / 50
2 - 4 weeks
Previous Name: 5050 DL 2A
Appearance: White to off-white granular powder
Inherent Viscosity: 0.15 - .25 dL/g
Copolymer Mole Ratio
d,l-lactide 50 - 54% Mole
glycolide 46 - 50% Mole
Residual Monomer:
% d,l-lactide 1.2% max
% glycolide 0.3% max
Tin Content: 200 ppm maximum
End Group: Acid
Molecular Weight, Mw: Report Mw, Mn and Polydispersity
5050 DLG 3A
0.25 - 0.35
50 / 50
3 - 4 weeks
Previous Name: 5050 DL 3A
Appearance: White to off-white granular powder
Inherent Viscosity: 0.25 - .35 dL/g
Copolymer Mole Ratio
d,l-lactide 45 - 55% Mole
glycolide 45 - 55% Mole
Residual Monomer:
% d,l-lactide 1.2% max
% glycolide 0.3% max
Tin Content: 200 ppm maximum
End Group: Acid
Molecular Weight, Mw: Report Mw, Mn and Polydispersity
5050 DLG 4A
0.35 - 0.45
50 / 50
3 - 4 weeks
Previous Name: 5050 DL 4A
Appearance: White to off-white granular powder
Inherent Viscosity: 0.35 - .45 dL/g
Copolymer Mole Ratio
d,l-lactide 45 - 55% Mole
glycolide 45 - 55% Mole
Residual Monomer:
% d,l-lactide 1.2% max
% glycolide 0.3% max
Tin Content: 200 ppm maximum
End Group: Acid
Molecular Weight, Mw: Report Mw, Mn and Polydispersity
5050 DLG 4.5A
0.40 - 0.50
50 / 50
3 - 4 weeks
Appearance: White to off-white granular powder
Inherent Viscosity: 0.40 - .50 dL/g
Copolymer Mole Ratio
d,l-lactide 45-55% Mole
glycolide 45-55% Mole
Residual Monomer:
% d,l-lactide 1.2% max
% glycolide 0.3% max
Tin Content: 200 ppm maximum
End Group: Acid
Molecular Weight, Mw: Report Mw, Mn and Polydispersity
* The majority are measured at 0.5% w/v in CHCL3 at 30 ◦C, with a size 25 Cannon-Fenske glass
capillary viscometer.
** Biodegradation kinetics vary from weeks to years depending upon numerous factors such as device geometry,
porosity, monomer ratio, molecular weight, inherent viscosity, polymer end group, crystalline vs. amorphous
character. Due to these and many other factors, the degradation information provided should be used as
a general guideline.
*** Previous 5050 DL High IV was run in HFIP not chloroform (old HFIP IV spec was 0.66 - 0.80 - New IV spec in chloroform is
0.45 - 0.55) Note: 5050 DLG 5E = historical 5050 DL High IV (due to IV result of HFIP vs. Chloroform)
Specification Comparison (New vs. Old):
New Names |
Inherent Viscosity (dL/g) |
End Group |
Old Names |
Inherent Viscosity (dL/g) |
| 100 DL 7E |
0.60 - 0.80 |
Ester |
100 DL High IV |
0.66 - 0.80 |
| 8515 DLG 7E |
0.60 - 0.80 |
Ester |
8515 DL High IV |
0.66 - 0.80 |
| 7525 DLG 7E |
0.60 - 0.80 |
Ester |
7525 DL High IV |
0.66 - 0.80 |
| 6535 DLG 7E |
0.60 - 0.80 |
Ester |
6535 DL High IV |
0.66 - 0.80 |
| 5050 DLG 7E |
0.60 - 0.80 |
Ester |
|
|
| 5050 DLG 5E **** |
0.45 - 0.55 |
Ester |
5050 DL High IV **** |
0.66 - 0.80 |
| |
|
|
|
|
| 5050 DLG 1A |
0.05 - 0.15 |
Acid |
5050 DL 1A |
0.08 – 0.12 |
| 5050 DLG 2A |
0.15 - 0.25 |
Acid |
5050 DL 2A |
0.14 – 0.18 |
| |
|
Acid |
5050 DL 2.5A |
0.20 – 0.33 |
| 5050 DLG 3A |
0.25 - 0.35 |
Acid |
5050 DL 3A |
0.25 – 0.43 |
| 5050 DLG 4A |
0.35 - 0.45 |
Acid |
5050 DL 3.5A |
0.35 – 0.43 |
| 5050 DLG 4.5A |
0.40 - 0.50 |
Acid |
5050 DL 4A |
0.38 – 0.48 |
**** Previous 5050 DL High IV was run in HFIP not chloroform (old HFIP IV spec was 0.66 - 0.80 - New IV spec in chloroform is 0.45 - 0.55) Note: 5050 DLG 5E = historical 5050 DL High IV (due to IV result of HFIP vs. Chloroform)
