Products > Optimize Reagents > Optimize - Polymers > PEG Smears
PEG Smears
Applications
- Crystallization grade Polyethylene glycol Smear for formulating screens or for optimization
Features
- Mixtures of different molecular weight Polyethylene glycol′s
- Sterile filtered solution
- Formulated in Type 1+ ultrapure water: 18.2 megaohm-cm resistivity at 25°C, < 5 ppb Total Organic Carbon, bacteria free (<1 Bacteria (CFU/ml)), pyrogen free (<0.03 Endotoxin (EU/ml)), RNase-free (< 0.01 ng/mL) and DNase-free (< 4 pg/µL)
Description
The PEG Smears come in 4 different molecular weight ranges:
• 50% PEG Smear Low (MW 400 - 1,000)
• 50% PEG Smear Medium (MW 2,000 - 5,000)
• 50% PEG Smear High (MW 6,000 - 10,000)
• 50% PEG Smear Broad (MW 400 - 10,000)
50% PEG Smear Low consist of:
• 12.5% v/v Polyethylene glycol 400
• 12.5% v/v Polyethylene glycol monomethyl ether 550
• 12.5% v/v Polyethylene glycol 600
• 12.5% w/v Polyethylene glycol 1,000
50% PEG Smear Medium consist of:
• 12.5% w/v Polyethylene glycol 2,000
• 12.5% w/v Polyethylene glycol 3,350
• 12.5% w/v Polyethylene glycol 4,000
• 12.5% w/v Polyethylene glycol monomethyl ether 5,000
50% PEG Smear High consist of:
• 16.67% w/v Polyethylene glycol 6,000
• 16.67% w/v Polyethylene glycol 8,000
• 16.67% w/v Polyethylene glycol 10,000
50% PEG Smear Broad consist of:
• 4.55% v/v Polyethylene glycol 400
• 4.55% v/v Polyethylene glycol monomethyl ether 550
• 4.55% v/v Polyethylene glycol 600
• 4.55% w/v Polyethylene glycol 1,000
• 4.55% w/v Polyethylene glycol 2,000
• 4.55% w/v Polyethylene glycol 3,350
• 4.55% w/v Polyethylene glycol 4,000
• 4.55% w/v Polyethylene glycol monomethyl ether 5,000
• 4.55% w/v Polyethylene glycol 6,000
• 4.55% w/v Polyethylene glycol 8,000
• 4.55% w/v Polyethylene glycol 10,000
50% PEG Smear Low
HR2-507
Refractive Index Range: 1.40516 - 1.40516 at 20°C
Conductivity Range: 34.7 - 34.7 µS/cm at 25°C
50% PEG Smear Medium
HR2-505
Refractive Index Range: 1.40180 - 1.40180 at 20°C
Conductivity Range: 37.4 - 37.4 µS/cm at 25°C
50% PEG Smear High
HR2-521
Refractive Index Range: 1.40224 - 1.40224 at 20°C
Conductivity Range: 36.5 - 36.5 µS/cm at 25°C
Polyethylene glycol 400
Synonyms: PEG 400
H(OCH2CH2)nOH
Mr 380-420
CAS Number [25322-68-3]
EC Number 500-038-2
Merck 14,7568
RTECS TQ3675000
MDL Number MFCD00081839
Polyethylene glycol monomethyl ether 550
Synonyms: Methoxypolyethylene glycol, mono-Methyl polyethylene glycol, Methoxy poly(ethylene glycol), PEG MME 550, MPEG
CH3(CH2CH2O)nOH
Average Mn ~550
CAS Number [9004-74-4]
EC Number 215-801-2
RTECS PE8271000
MDL Number MFCD00084416
Polyethylene glycol 600
Synonyms: PEG 600
H(OCH2CH2)nOH
Mr 570-630
CAS Number [25322-68-3]
EC Number 500-038-2
Merck 14,7568
RTECS TQ3500000
MDL Number MFCD00081839
Polyethylene glycol 1,000
Synonyms: PEG 1,000
H(OCH2CH2)nOH
Mr 950-1,050
CAS Number [25322-68-3]
EC Number 500-038-2
Merck 14,7568
RTECS TQ4025000
MDL Number MFCD00081839
Polyethylene glycol 2,000
Synonyms: PEG 2,000
H(OCH2CH2)nOH
Mr 1,900-2,200
CAS Number [25322-68-3]
EC Number 500-038-2
Merck 14,7568
RTECS TQ3500000
MDL Number MFCD00081839
Polyethylene glycol 3,350
Synonyms: PEG 3,350
H(OCH2CH2)nOH
Mr 3,015-3,685
CAS Number [25322-68-3]
EC Number 500-038-2
Merck 14,7568
MDL Number MFCD00081839
Polyethylene glycol 4,000
Synonyms: PEG 4,000
H(OCH2CH2)nOH
Mr 3,500-4,500
CAS Number [25322-68-3]
EC Number 500-038-2
Merck 14,7568
RTECS TQ3500000
MDL Number MFCD00081839
Polyethylene glycol monomethyl ether 5,000
Synonyms: Methoxypolyethylene glycol, mono-Methyl polyethylene glycol, Methoxy poly(ethylene glycol), PEG MME 5,000, MPEG 5,000
CH3(CH2CH2O)nOH
Average Mn 5,000
CAS Number [9004-74-4]
EC Number 215-801-2
RTECS PE8271000
MDL Number MFCD00084416
Polyethylene glycol 6,000
Synonyms: PEG 6,000
H(OCH2CH2)nOH
Mr 5,000-7,000
CAS Number [25322-68-3]
EC Number 500-038-2
Merck 14,7568
RTECS TQ4105000
MDL Number MFCD00081839
Polyethylene glycol 8,000
Synonyms: PEG 8,000
H(OCH2CH2)nOH
Mr 7,000-9,000
CAS Number [25322-68-3]
EC Number 500-038-2
Merck 14,7568
RTECS TQ4105000
MDL Number MFCD00081839
Polyethylene glycol 10,000
Synonyms: PEG 10,000
H(OCH2CH2)nOH
Mr 8,500-11,500
CAS Number [25322-68-3]
EC Number 500-038-2
Merck 14,7568
RTECS TQ4110000
MDL Number MFCD00081839
Support Material(s)
HR2-507 PEG Smear Low SDS HR2-505 PEG Smear Medium SDS HR2-521 PEG Smear High SDS HR2-511 PEG Smear Broad SDS
Certificate Of Analysis
References
1. Chaikuad, A., Knapp, S. & von Delft, F. (2015). Defined PEG smears as an alternative approach to enhance the search for crystallization conditions and crystal-quality improvement in reduced screens. Acta Cryst. D71, 1627-1639.