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PEG/Anion Screen Solutions: Composition, Concentration, and Preparation, Study notes of Chemistry

A list of PEG/anion screen solutions with their respective chemical names, formula weights, concentrations, and final volumes. It also includes instructions on how to prepare each solution at different pH levels using various reagents.

What you will learn

  • What is the role of PEG in a PEG/anion screen?
  • How do you prepare a PEG/anion screen solution at a specific pH?
  • What are the different components of a PEG/anion screen?

Typology: Study notes

2021/2022

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PEG/pH
(24)
PEG/ Cation
(24)
456789
NaCl NH4Cl LiCl MgCl2CaCl2ZnCl2
No Buffer
pH 6.5
pH 7.5
pH 8.5
NaF NaBr NaI KSCN NaNO3NaFormate NaAcetate Na2SO4Na/Ktartrate Na/KPO4NaCitrate NaMalonate
100mM
Bis-tris
propane
200mM of each
Take a 96 well plate and divide up into a 24 well pH/PEG screen, a 24 well PEG/Cation screen and a 48 well
PEG/anion screen. Use different PEGs for the different subscreens
pH of the buffer system
Succinic acid, Phosphate,
glycine system
Malonic acid, imidazol, boric
system
Propionic acid, cacodylate, Bis-
Tris Propane system
Malic, MES, Tris system
This is the PEG/pH screen.
All wells have 25% PEG 1500
PEG/Anion (48)
This is the PEG/anion screen
All wells have 20% PEG 3350
This is the PEG/cation screen
All wells have 20% PEG 6000
Acetate pH 5
MES pH 6
HEPES pH 7
Tris pH 8
200mM of all, except for 10mM ZnCl2,
pf3
pf4
pf5
pf8
pf9
pfa

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PEG/pH (24)

PEG/ Cation (24)

NaCl NH^4 Cl^ LiCl MgCl 2 CaCl 2 ZnCl 2

No Buffer

pH 6.

pH 7.

pH 8.

NaF NaBr NaI KSCN NaNO 3 NaFormate NaAcetate Na 2 SO 4 Na/Ktartrate Na/KPO 4 NaCitrate NaMalonate

100mM

Bis-tris

propane

200mM of each

Take a 96 well plate and divide up into a 24 well pH/PEG screen, a 24 well PEG/Cation screen and a 48 well

PEG/anion screen. Use different PEGs for the different subscreens

pH of the buffer system

Succinic acid, Phosphate,

glycine system

Malonic acid, imidazol, boric

system

Propionic acid, cacodylate, Bis-

Tris Propane system

Malic, MES, Tris system

This is the PEG/pH screen.

All wells have 25% PEG 1500

PEG/Anion (48)

This is the PEG/anion screen

All wells have 20% PEG 3350

This is the PEG/cation screen

All wells have 20% PEG 6000

Acetate pH 5

MES pH 6

HEPES pH 7

Tris pH 8

200mM of all, except for 10mM ZnCl 2 ,

Chemical Stock pH # Additions Total volume needed Formula MW g/50ml

1M Acetic acid: 5.75ml of glacial (17.4M) acetic acid made up to 100ml with water

1M MES pH 6 - dissolve 10.66g MES.H2O in 25ml H20 - add NaOH to pH 6(about 2.07ml 10M), and adjust final volume to 50ml

1M HEPES pH 7 - dissolve 11.92g HEPES in 25ml H20 - add NaOH until pH 7 (about 1.1ml 10M), adjust volume to 50ml

1M Tris pH 8 - dissolve up 6.06g tris add HCl (about 2.75ml 37%) to pH 8, adjust volume to 50ml

1M BisTrisPropane pH 8.5 - dissolve up 14.12g in 25ml H2O - add HCl to pH 8.5, adjust volume to 50ml

1M BisTrisPropane pH 6.5 - dissolve up 14.12g in 25ml H2O - add HCl to pH 6.5, adjust volume to 50ml

Reagent position

reagent number [Salt]

[Salt] units

[stock]

ml salt in 1ml

Salt

pH

[Buffer] [Buffer] units

[stock]

ml buffer in 1 ml

Buffer

pH

[Precipitant 1]

[Precipitant 1] units

[stock]

ml precipitant in 1ml

Precipitant 1 ml H2O in 1 ml

A

1.000 0.100 M

0.100 SPG

0.000 M

0.000 SPG

25.000 %

0.500 PEG 1.5K

A

2.000 0.083 M

0.083 SPG

0.017 M

0.017 SPG

25.000 %

0.500 PEG 1.5K

A

3.000 0.067 M

0.067 SPG

0.033 M

0.033 SPG

25.000 %

0.500 PEG 1.5K

A

4.000 0.050 M

0.050 SPG

0.050 M

0.050 SPG

25.000 %

0.500 PEG 1.5K

A

5.000 0.033 M

0.033 SPG

0.067 M

0.067 SPG

25.000 %

0.500 PEG 1.5K

A

6.000 0.017 M

0.017 SPG

0.083 M

0.083 SPG

25.000 %

0.500 PEG 1.5K

A

7.000 0.200 M

0.200 NaCl

0.100 M

0.100 Acetate

20.000 %

0.400 PEG 6K

A

8.000 0.200 M

0.200 NH

Cl 4

0.100 M

0.100 Acetate

20.000 %

0.400 PEG 6K

A

9.000 0.200 M

0.200 LiCl

0.100 M

0.100 Acetate

20.000 %

0.400 PEG 6K

A

10.000 0.200 M

0.200 MgCl

2

0.100 M

0.100 Acetate

20.000 %

0.400 PEG 6K

A

11.000 0.200 M

0.200 CaCl

2

0.100 M

0.100 Acetate

20.000 %

0.400 PEG 6K

A

12.000 0.010 M

0.010 ZnCl

2

0.100 M

0.100 Acetate

20.000 %

0.400 PEG 6K

B

13.000 0.100 M

0.100 MIB

0.000 M

0.000 MIB

25.000 %

0.500 PEG 1.5K

B

14.000 0.083 M

0.083 MIB

0.017 M

0.017 MIB

25.000 %

0.500 PEG 1.5K

B

15.000 0.067 M

0.067 MIB

0.033 M

0.033 MIB

25.000 %

0.500 PEG 1.5K

B

16.000 0.050 M

0.050 MIB

0.050 M

0.050 MIB

25.000 %

0.500 PEG 1.5K

B

17.000 0.033 M

0.033 MIB

0.067 M

0.067 MIB

25.000 %

0.500 PEG 1.5K

B

18.000 0.017 M

0.017 MIB

0.083 M

0.083 MIB

25.000 %

0.500 PEG 1.5K

B

19.000 0.200 M

0.200 NaCl

0.100 M

0.100 MES

20.000 %

0.400 PEG 6K

B

20.000 0.200 M

0.200 NH

Cl 4

0.100 M

0.100 MES

20.000 %

0.400 PEG 6K

B

21.000 0.200 M

0.200 LiCl

0.100 M

0.100 MES

20.000 %

0.400 PEG 6K

B

22.000 0.200 M

0.200 MgCl

2

0.100 M

0.100 MES

20.000 %

0.400 PEG 6K

B

23.000 0.200 M

0.200 CaCl

2

0.100 M

0.100 MES

20.000 %

0.400 PEG 6K

B

24.000 0.010 M

0.010 ZnCl

2

0.100 M

0.100 MES

20.000 %

0.400 PEG 6K

C

25.000 0.100 M

0.100 PCB

0.000 M

0.000 PCB

25.000 %

0.500 PEG 1.5K

C

26.000 0.082 M

0.082 PCB

0.018 M

0.018 PCB

25.000 %

0.500 PEG 1.5K

C

27.000 0.064 M

0.064 PCB

0.036 M

0.036 PCB

25.000 %

0.500 PEG 1.5K

C

28.000 0.046 M

0.046 PCB

0.054 M

0.054 PCB

25.000 %

0.500 PEG 1.5K

C

29.000 0.028 M

0.028 PCB

0.072 M

0.072 PCB

25.000 %

0.500 PEG 1.5K

C

30.000 0.010 M

0.010 PCB

0.090 M

0.090 PCB

25.000 %

0.500 PEG 1.5K

C

31.000 0.200 M

0.200 NaCl

0.100 M

0.100 HEPES

20.000 %

0.400 PEG 6K

C

32.000 0.200 M

0.200 NH

Cl 4

0.100 M

0.100 HEPES

20.000 %

0.400 PEG 6K

C

33.000 0.200 M

0.200 LiCl

0.100 M

0.100 HEPES

20.000 %

0.400 PEG 6K

C

34.000 0.200 M

0.200 MgCl

2

0.100 M

0.100 HEPES

20.000 %

0.400 PEG 6K

C

35.000 0.200 M

0.200 CaCl

2

0.100 M

0.100 HEPES

20.000 %

0.400 PEG 6K

C

36.000 0.010 M

0.010 ZnCl

2

0.100 M

0.100 HEPES

20.000 %

0.400 PEG 6K

D

37.000 0.100 M

0.100 MMT

0.000 M

0.000 MMT

25.000 %

0.500 PEG 1.5K

D

38.000 0.080 M

0.080 MMT

0.020 M

0.020 MMT

25.000 %

0.500 PEG 1.5K

D

39.000 0.060 M

0.060 MMT

0.040 M

0.040 MMT

25.000 %

0.500 PEG 1.5K

D

40.000 0.040 M

0.040 MMT

0.060 M

0.060 MMT

25.000 %

0.500 PEG 1.5K

D

41.000 0.020 M

0.020 MMT

0.080 M

0.080 MMT

25.000 %

0.500 PEG 1.5K

D

42.000 0.000 M

0.000 MMT

0.100 M

0.100 MMT

25.000 %

0.500 PEG 1.5K

D

43.000 0.200 M

0.200 NaCl

0.100 M

0.100 TRIS

20.000 %

0.400 PEG 6K

D

44.000 0.200 M

0.200 NH

Cl 4

0.100 M

0.100 TRIS

20.000 %

0.400 PEG 6K

D

45.000 0.200 M

0.200 LiCl

0.100 M

0.100 TRIS

20.000 %

0.400 PEG 6K

D

46.000 0.200 M

0.200 MgCl

2

0.100 M

0.100 TRIS

20.000 %

0.400 PEG 6K

D

47.000 0.200 M

0.200 CaCl

2

0.100 M

0.100 TRIS

20.000 %

0.400 PEG 6K

D

48.000 0.010 M

0.010 ZnCl

2

0.100 M

0.100 TRIS

20.000 %

0.400 PEG 6K

E

49.000 0.200 M

0.200 NaF

20.000 %

0.400 PEG 3.35K

E

50.000 0.200 M

0.200 NaBr

20.000 %

0.400 PEG 3.35K

E

51.000 0.200 M

0.200 NaI

20.000 %

0.400 PEG 3.35K

E

52.000 0.200 M

0.200 KCN

20.000 %

0.400 PEG 3.35K

E

53.000 0.200 M

0.200 KNO

20.000 %

0.400 PEG 3.35K

E

54.000 0.200 M

0.200 NaFormate

20.000 %

0.400 PEG 3.35K

E

55.000 0.200 M

0.200 NaAcetate

20.000 %

0.400 PEG 3.35K

E

56.000 0.200 M

0.200 NaSulfate

20.000 %

0.400 PEG 3.35K

E

57.000 0.200 M

0.200 Na/Ktartrate

20.000 %

0.400 PEG 3.35K

E

58.000 0.200 M

0.200 Na/Kphosphate

20.000 %

0.400 PEG 3.35K

E

59.000 0.200 M

0.200 NaCitrate

20.000 %

0.400 PEG 3.35K

E

60.000 0.200 M

0.200 NaMalonate

20.000 %

0.400 PEG 3.35K

F

61.000 0.200 M

0.200 NaF

0.100 M

0.100 BisTrisPro 6.

20.000 %

0.400 PEG 3.35K

F

62.000 0.200 M

0.200 NaBr

0.100 M

0.100 BisTrisPro 6.

20.000 %

0.400 PEG 3.35K

F

63.000 0.200 M

0.200 NaI

0.100 M

0.100 BisTrisPro 6.

20.000 %

0.400 PEG 3.35K

F

64.000 0.200 M

0.200 KCN

0.100 M

0.100 BisTrisPro 6.

20.000 %

0.400 PEG 3.35K

F

65.000 0.200 M

0.200 KNO

0.100 M

0.100 BisTrisPro 6.

20.000 %

0.400 PEG 3.35K

F

66.000 0.200 M

0.200 NaFormate

0.100 M

0.100 BisTrisPro 6.

20.000 %

0.400 PEG 3.35K

F

67.000 0.200 M

0.200 NaAcetate

0.100 M

0.100 BisTrisPro 6.

20.000 %

0.400 PEG 3.35K

F

68.000 0.200 M

0.200 NaSulfate

0.100 M

0.100 BisTrisPro 6.

20.000 %

0.400 PEG 3.35K

F

69.000 0.200 M

0.200 Na/Ktartrate

0.100 M

0.100 BisTrisPro 6.

20.000 %

0.400 PEG 3.35K

F

70.000 0.200 M

0.200 Na/Kphospha

0.100 M

0.100 BisTrisPro 6.

20.000 %

0.400 PEG 3.35K

F

71.000 0.200 M

0.200 NaCitrate

0.100 M

0.100 BisTrisPro 6.

20.000 %

0.400 PEG 3.35K

F

72.000 0.200 M

0.200 NaMalonate

0.100 M

0.100 BisTrisPro 6.

20.000 %

0.400 PEG 3.35K

G

73.000 0.200 M

0.200 NaF

0.100 M

0.100 BisTrisPro 7.

20.000 %

0.400 PEG 3.35K

G

74.000 0.200 M

0.200 NaBr

0.100 M

0.100 BisTrisPro 7.

20.000 %

0.400 PEG 3.35K

G

75.000 0.200 M

0.200 NaI

0.100 M

0.100 BisTrisPro 7.

20.000 %

0.400 PEG 3.35K

G

76.000 0.200 M

0.200 KCN

0.100 M

0.100 BisTrisPro 7.

20.000 %

0.400 PEG 3.35K

G

77.000 0.200 M

0.200 KNO

0.100 M

0.100 BisTrisPro 7.

20.000 %

0.400 PEG 3.35K

G

78.000 0.200 M

0.200 NaFormate

0.100 M

0.100 BisTrisPro 7.

20.000 %

0.400 PEG 3.35K

G

79.000 0.200 M

0.200 NaAcetate

0.100 M

0.100 BisTrisPro 7.

20.000 %

0.400 PEG 3.35K

G

80.000 0.200 M

0.200 NaSulfate

0.100 M

0.100 BisTrisPro 7.

20.000 %

0.400 PEG 3.35K

G

81.000 0.200 M

0.200 Na/Ktartrate

0.100 M

0.100 BisTrisPro 7.

20.000 %

0.400 PEG 3.35K

G

82.000 0.200 M

0.200 Na/Kphospha

0.100 M

0.100 BisTrisPro 7.

20.000 %

0.400 PEG 3.35K

G

83.000 0.200 M

0.200 NaCitrate

0.100 M

0.100 BisTrisPro 7.

20.000 %

0.400 PEG 3.35K

G

84.000 0.200 M

0.200 NaMalonate

0.100 M

0.100 BisTrisPro 7.

20.000 %

0.400 PEG 3.35K

H

85.000 0.200 M

0.200 NaF

0.100 M

0.100 BisTrisPro 8.

20.000 %

0.400 PEG 3.35K

H

86.000 0.200 M

0.200 NaBr

0.100 M

0.100 BisTrisPro 8.

20.000 %

0.400 PEG 3.35K

H

87.000 0.200 M

0.200 NaI

0.100 M

0.100 BisTrisPro 8.

20.000 %

0.400 PEG 3.35K

H

88.000 0.200 M

0.200 KCN

0.100 M

0.100 BisTrisPro 8.

20.000 %

0.400 PEG 3.35K

H

89.000 0.200 M

0.200 KNO

0.100 M

0.100 BisTrisPro 8.

20.000 %

0.400 PEG 3.35K

H

90.000 0.200 M

0.200 NaFormate

0.100 M

0.100 BisTrisPro 8.

20.000 %

0.400 PEG 3.35K

H

91.000 0.200 M

0.200 NaAcetate

0.100 M

0.100 BisTrisPro 8.

20.000 %

0.400 PEG 3.35K

H

92.000 0.200 M

0.200 NaSulfate

0.100 M

0.100 BisTrisPro 8.

20.000 %

0.400 PEG 3.35K

H

93.000 0.200 M

0.200 Na/Ktartrate

0.100 M

0.100 BisTrisPro 8.

20.000 %

0.400 PEG 3.35K

H

94.000 0.200 M

0.200 Na/Kphospha

0.100 M

0.100 BisTrisPro 8.

20.000 %

0.400 PEG 3.35K

H

95.000 0.200 M

0.200 NaCitrate

0.100 M

0.100 BisTrisPro 8.

20.000 %

0.400 PEG 3.35K

H

96.000 0.200 M

0.200 NaMalonate

0.100 M

0.100 BisTrisPro 8.

20.000 %

0.400 PEG 3.35K

Scoring sheet 1 2 3 4 5 6 7 8 9 10 11 12

A

0.2M Li2SO Acetate pH

50% PEG 400

0.2M NH4Cl pH 6. 20% PEG 3350

Cacodylate pH 6. 40% MPD 5% PEG 8K

0.2M NaCl Phos-cit pH

20% PEG 8K

Na/K PO4 pH

25% 1, Propanediol 10% glycerol

0.2M MgCl Hepes pH 7. 70% MPD

1M NaCit Cacodylate pH 6.

1.6M MgSO MES pH 6.

0.2M MgCl Tris pH 8. 50% ethylene glycol

Hepes pH 7. 30% Jeffamine ED- 2001

0.1M KSCN

30% PEG

MME 2K

0.2M AmAc Bis-Tris pH

45% MPD

B Citrate pH 5. 20% PEG 3K

0.2M KFo pH

20% PEG 3350

Phos-cit pH

40% Ethanol 5% PEG 1K

1M LiCl Citrate pH 4 20% PEG 6K

Bicine pH 9 10% PEG 20K 2% dioxane

Tris pH 8. 20% PEG 8K

2M AmSO 0.2M NaCl Cacodylate pH 6.

Bicine pH 9. 10% PEG 6K

Bicine pH 9. 10% MPD

0.02M MgCl Hepes pH 7. 22% polyacrylic acid 5100

0.15M KBr 30% PEG MME 2K

0.1M AmAc Bis-Tris pH

17% PEG 10K

C

0.2M AmCit pH 5 20% PEG 3350

0.2M

NH4H2PO

Tris pH 8. 50% MPD

Acetate pH

8% PEG 4K

0.2M AmNit. pH 6. 20% PEG 3350

2M AmSO Acetate ph

0.2M Li2SO Tris pH 8. 40% PEG 400

0.2M NaCl Hepes pH 7. 10% propanol

1.6M CaAc Cacodylate pH 6. 14.4% PEG 8K 20% glycerol

0.8M

succinate pH

0.1M CoCl tris pH 8. 20% polyvinyl pyrrolidone K

2M AmSO Bis-Tris pH

0.2M AmSO Bis-Tri pH 5. 25% PEG 3350

D

20mM CaCl NaAc. pH 4. 30% MPD

0.2M KNO

pH 6. 20% PEG 3350

0.2M MgCl Tris pH 7 10% PEG 8K

Hepes pH 7 10% PEG 6K

10% PEG 1K

10% PEG 8K

Tris pH 8. 40% MPD

1.26M

AmSO 0.2M Li2SO Tris pH 8.

Imidazol pH 8 10% PEG 8K

2.1M DL

malate pH 7.

0.2M TMAO

Tris pH 8. 20% PEG MME 2K

3M NaCl Bis-Tris pH

0.2M NaCl Bis-Tris pH

25% PEG 3350

E

0.2M MgFo pH 5. 20% PEG 3350

0.8M AmSO Citrate pH 4

Citrate pH 5 20% PEG 6K

0.8M

NaH2PO 0.8M KH2PO Hepes pH 7.

24% PEG

1.5K

20% glycerol

0.17M

AmSO 25.5% PEG 4K 15% glycerol

CAPS pH

40% MPD

0.05M CsCl MES pH 6. 30% Jeffamine M- 600

2.4M

malonate pH

5mM CoCl2,CdCl2, MgCl2,NiCl Hepes pH 7. 12% PEG 3350

0.3M MgFo. Bis-Tris pH

0.2M Li2SO Bis-Tris pH

25% PEG 3350

F

0.2M Li2SO Phos-cit pH

20% PEG 1K

0.2M NaSCN pH 6. 20% PEG 3350

0.2M MgCl Cacodylate pH 6. 50% PEG 200

Phos-cit pH

40% PEG 300

0.2M MgCl Hepes pH 7. 30% PEG 400

0.2M CaAc Cacodylate pH 6. 40% PEG 300

0.2M ZnAc. Imidazol pH 8 20% PEG 3K

3.15M

AmSO Citrate pH 5.

1.1M

malonate pH

Hepes pH 7. 0.5% Jeffamine ED-

0.2M

malonate pH

20% PEG 3350

1M AmSO Bis-Tris pH

1% PEG 3350

0.2M AmAc Bis-Tris pH

25% PEG 3350

G

CHES pH 9. 20% PEG 8K

Bicine pH 9 20% PEG 6K 1.6M NaCit

0.2M ZnAc. Acetate pH

10% PEG 3K

0.2M NaCl Na/K PO4 pH

50% PEG 200

0.14M CaCl Acetate pH

14% propanol 30% glycerol

0.2M ZnAc. Cacodylate pH 6. 10% propanol

Tris pH 8. 20% MPD

1.0M

succinate Hepes pH 7 1% PEG MME 2K

0.1M

succinate pH

15% PEG 3350

Bis-Tris pH

25% PEG 3350

0.2M MgCl Bis-Tris pH

25% PEG 3350

H

0.2M AmFo pH 6. 20% PEG 3350

Hepes pH 7. 10% PEG 8K 8% Ethylene Glycol

0.2M Kcit pH

20% PEG 3350

Tris pH 8. 20% Ethanol

0.2M Li2SO Acetate ph

30% PEG 8K

0.04M

KH2PO

16% PEG 8K

20% glycerol

1M

(NH4)2HPO

Acetate pH

Hepes pH 6. 20% Jeffamine M- 600

Hepes ph 7. 30% jeffamine M-600 pH 7

0.15M DL-

malate pH 7. 20% PEG 3350

0.2M CaCl Bis-Tris pH

45% MPD

0.2M AmAc Hepes pH

45% MPD

Reagent number

[Salt1]

[Salt1] units

Salt 1

[Buffer] [Buffer] units Buffer

pH

[Precipitant 1]

[Precipitant 1] units

[Stock]

ml stock in 1ml

Precipitant 1

ml H2O in 1ml

Reagent number source screen

0.20 M

Li

SO 2

4

0.1 M

acetate

50 %w/v

0.500 PEG 400

1 W1 cryo #

0.1 M

citrate

20 %w/v

0.400 PEG 3000

2 W1

0.20 M

(NH

HC

H 6

O 5

pH 5.0 7

20 %w/v

0.400 PEG 3350

3 PEG/Ion #

0.02 M

CaCl

2

0.1 M

NaOAcetate

30 %v/v

0.300 MPD

4 H1

0.20 M

Mg(CHO2)2 pH 5.

20 %w/v

0.400 PEG 3350

5 PEG/Ion #

0.20 M

Li

SO 2

4

0.1 M

phosphate-citrate

20 %w/v

0.400 PEG 1000

6 W1

0.1 M

CHES

20 %w/v

0.400 PEG 8000

7 W1

0.20 M

(NH4)CHO2 pH 6.

20 %w/v

0.400 PEG 3350

8 PEG/Ion #

0.20 M

(NH4)Cl pH 6.

20 %w/v

0.400 PEG 3350

9 PEG/Ion #

0.20 M

KCHO2 pH 7.

20 %w/v

0.400 PEG 3350

10 PEG/Ion #

0.20 M

(NH4)H2PO

0.1 M

tris

50 %v/v

0.500 MPD

11 H2

0.20 M

KNO3 pH 6.

20 %w/v

0.400 PEG 3350

12 Peg/Ion #

0.80 M

(NH4)2SO

0.1 M

citrate

13 (NH4)2SO4

0.20 M

NaSCN pH 6.

20 %w/v

0.400 PEG 3350

14 Peg/Ion #

0.1 M

bicine

20 %w/v

0.400 PEG 6000

15 P6K

0.1 M

HEPES

10 %w/v

0.200 PEG 8000

16 H2

8 %v/v

0.080 Ethylene glycol

0.1 M

cacodylate

40 %v/v

0.400 MPD

17 W2cryo #

5 %w/v

0.100 PEG 8000

0.1 M

phosphate-citrate

40 %v/v

0.400 Ethanol

18 W1cryo #

5 %w/v

0.100 PEG 1000

0.1 M

NaOAcetate

8 %w/v

0.160 PEG 4000

19 H1

0.20 M

MgCl

0.1 M

tris

10 %w/v

0.200 PEG 8000

20 W2

0.1 M

citrate

20 %w/v

0.400 PEG 6000

21 P6K

0.20 M

MgCl

0.1 M

cacodylate

50 %v/v

0.500 PEG 200

22 W2cryo #

1.6 M

Na3C6H5O

23 H2

0.20 M

K3C6H5O7 pH 8.

20 %w/v

0.400 PEG 3350

24 Peg/Ion #

0.20 M

NaCl

0.1 M

phosphate-citrate

20 %w/v

0.400 PEG 8000

25 W1

1.00 M

LiCl

0.1 M

citrate

20 %w/v

0.400 PEG 6000

26 P6K/LiCl #

0.20 M

(NH4)NO3 pH 6.

20 %w/v

0.400 PEG 3350

27 Peg/Ion #

0.1 M

HEPES

10 %w/v

0.200 PEG 6000

28 P6K

0.80 M

NaH2PO

0.1 M

HEPES

29 H1

0.80 M

KH2PO

0.1 M

phosphate-citrate

40 %v/v

0.400 PEG 300

30 W2cryo #

0.20 M

Zn(C2H3O2)

0.1 M

acetate

10 %w/v

0.200 PEG 3000

31 W2

0.1 M

tris

20 %v/v

0.200 Ethanol

32 H2

0.1 M

Na/K phosphate

25 %v/v

0.250 1,2 propandiol

33 W2cryo #

10 %v/v

0.100 glycerol

0.1 M

bicine

10 %w/v

0.333 PEG 20000

34 H2

2 %v/v

0.050 dioxane

2.00 M

(NH4)2SO

0.1 M

acetate

35 H1

10 %w/v

0.200 PEG 1000

36 H2

10 %w/v

0.200 PEG 8000

24 %w/v

0.480 PEG 1500

37 H1cryo #

20 %v/v

0.200 glycerol

0.20 M

MgCl

0.1 M

HEPES

30 %v/v

0.300 PEG 400

38 H1cryo #

0.20 M

NaCl

0.1 M

Na/K phosphate

50 %v/v

0.500 PEG 200

39 W2cryo #

0.20 M

Li2SO

0.1 M

acetate

30 %w/v

0.600 PEG 8000

40 W1

0.20 M

MgCl

0.1 M

HEPES

70 %v/v

0.700 MPD

41 H2

0.1 M

tris

20 %w/v

0.400 PEG 8000

42 W2

0.20 M

Li2SO

0.1 M

tris

40 %v/v

0.400 PEG 400

43 W1cryo #

0.1 M

tris

40 %v/v

0.400 MPD

44 MPD

0.17 M

(NH4)2SO

25.5 %w/v

0.510 PEG 4000

45 H1cryo #

15 %v/v

0.150 glycerol

0.20 M

Ca(C2H3O2)

0.1 M

cacodylate

40 %v/v

0.400 PEG 300

46 W1cryo #

0.14 M

CaCl

0.07 M

acetate

14 %v/v

0.140 2-propanol

47 H1cryo #

30 %v/v

0.300 glycerol

0.04 M

KH2PO

16 %w/v

0.320 PEG 8000

48 H1cryo #

20 %v/v

0.200 glycerol

1.00 M

Na3C6H5O

0.1 M

cacodylate

49 W1

2.00 M

(NH4)2SO

0.1 M

cacodylate

50 W2

count Chemical type pH Stock smallest volume/ 1ml largest volume/ 1ml # of additions ml to make up 1ml screen

  • Water 96 32.
  • PEG 1500 50%
  • PEG 3350 50% 48 19.
  • PEG 6000 50% 24 9.
  • SPG system 1M 4 6 0.
  • SPG system 1M 10 6 0.
  • MIB system 1M 4 6 0.
  • MIB system 1M 10 6 0.
  • PCB system 1M 4 6 0.
  • PCB system 1M 9.5 6 0.
  • MMT system 1M 4 6 0.
  • MMT system 1M 9 6 0.
  • NaAcetate 1M 5 6 0.6 NaAcetate anhydrous 82.
  • MES 1M 6 6 0.6 MES.H2O 213.
  • HEPES 1M 7 6 0.6 HEPES 238.
  • Tris 1M 8 6 0.6 Tris 121.
  • Bis-Tris Propane 1M 6.5 12 1.2 Bis-tris-propane 282.
  • Bis-Tris Propane 1M 7.5 12 1.
  • Bis-Tris Propane 1M 8.5 12 1.
  • NaCl 1M 4 0.8 NaCl 58.
  • NH4Cl 1M 4 0.8 NH4Cl 53.
  • LiCl 1M 4 0.8 LiCl 42.
  • MgCl2 1M 4 0.8 MgCl2.6H2O 203.
  • CaCl2 1M 4 0.8 CaCl2.2H2O 147.
  • ZnCl2 1M 4 0.04 ZnCl2 136.
  • NaF 1M 4 0.8 NaF 41.
  • NaBr 1M 4 0.8 NaBr 102.
  • NaI 1M 4 0.8 NaI 149.
  • KSCN 1M 4 0.8 KSCN 97.
  • NaNO3 1M 4 0.8 NaNO3 84.
  • NaFormate 1M 4 0.8 NaFormate 68.
  • NaAcetate 1M 4 0.8 NaAcetate 82.
  • NaAcetate NaAcetate.3H2O 136.
  • Na2SO4 1M 4 0.8 Na2SO4.
    • Na2SO4.10H2O 322.
  • Na/K Tartrate 1M 4 0.8 K/Na tartrate.4H2O 282.
  • Na/K PO4 1M 4 0.8 Na2HPO4.2H20 177. - NaH2PO4.H2O 137. - K2HPO4.3H2O 228. - KH2PO4 136.
  • Trisodium Citrate 1M 4 0.8 NaCitrate.2H2O 294.
  • NaMalonate 1M 7 4 0.8 C3H2Na2O4.H2O
  • 1M Sodium acetate buffer pH 5 - dissolve 4.1g of NaC2H302 anhydrous in 50ml H20, add about 26ml 1M acetic acid until pH =
  • 1M NaCl - dissolve up 2.92g NaCl in 50ml H 1M BisTrisPropane pH 7.5 - dissolve up 14.12g in 25ml H2O - add HCl to pH 7.5, adjust volume to 50ml
  • 1M NH4Cl -dissolve up 2.67g NH4Cl in 50ml H - acetate buffer 4.5 1 0.1 0.1 4 0. - acetate buffer 4.6 1 0.07 0.1 4 0. - bicine buffer 9 1 0.1 0.1 4 0. - bis-tris buffer 5.5 1 0.1 0.1 13 1. - cacodylate buffer 6.5 1 0.08 0.1 7 0. - CAPS buffer 10.5 1 0.1 0.1 1 0. - CHES buffer 9.5 1 0.1 0.1 1 0. - citrate buffer 4 1 0.1 0.1 2 0. - citrate buffer 5 1 0.1 0.1 2 0. - citrate buffer 5.5 1 0.1 0.1 1 0. - HEPES buffer 6.5 1 0.1 0.1 1 0. - HEPES buffer 7 1 0.1 0.1 5 0. - HEPES buffer 7.5 1 0.1 0.1 8 0. - imidazole buffer 8 1 0.1 0.1 2 0. - MES buffer 6.5 1 0.1 0.1 2 0. - Na/K phosphate buffer 6.2 1 0.1 0.1 2 0. - phosphate-citrate buffer 4.2 1 0.1 0.1 4 0. - tris buffer 7 1 0.1 0.1 1 0. - tris buffer 8 1 0.1 0.1 2 0.
  • 20 tris buffer 8.5 1 0.1 0.1 8 0. - 1,2 propandiol organic 100 0.25 0.25 1 0. - 2-propanol organic 100 0.1 0.14 3 0. - dioxane organic 40 0.05 0.05 1 0. - Ethanol organic 100 0.2 0.4 2 0. - Ethylene glycol organic 100 0.08 0.5 2 0. - glycerol organic 100 0.1 0.3 6 1.
    • 7 MPD organic 100 1 0.7 11 4.
      • Jeffamine M-600 polymer 50 0.4 0.6 3 1.
      • PEG 1000 polymer 50 0.1 0.4 3 0.
      • PEG 10000 polymer 50 0.34 0.34 1 0.
      • PEG 1500 polymer 50 0.48 0.48 1 0.
      • PEG 200 polymer 100 0.5 0.5
      • PEG 20000 polymer 30 0.333 0.333 1 0.
      • PEG 300 polymer 100 0.4 0.4 2 0.
      • PEG 3000 polymer 50 0.2 0.4
      • PEG 3350 polymer 50 0.02 0.5 20 7.
      • PEG 400 polymer 100 0.3 0.5 3 1.
      • PEG 4000 polymer 50 0.16 0.51 2 0.
      • PEG 6000 polymer 50 0.2 0.4 5 1.
      • PEG 8000 polymer 50 0.2 0.6 11 3.
      • PEG MME 2000 polymer 50 0.02 0.6 4 1.
      • polyacrylic acid 5100 sodium salt polymer 50 0.44 0.44 1 0.
  • 16 polyvinylpyrrolidone K15 polymer 50 0.4 0.4 1 0. - (CH3)3NO (TMAO salt 1 0.2 0.2 1 0. - (NH4)(C2H3O2) salt 1 0.1 0.2 4 0. - (NH4)2HC6H5O7 salt 5 2.5 0.08 0.08 1 0. - (NH4)2HPO4 salt 3.5 0.286 0.286 1 0. - (NH4)2SO4 salt 3.5 0.049 0.9 9 3. - (NH4)CHO2 salt 6.6 10 0.02 0.02 1 0. - (NH4)Cl salt 6.3 5 0.04 0.04 1 0. - (NH4)H2PO4 salt 2.5 0.08 0.08 1 0. - (NH4)NO3 salt 6.3 10 0.02 0.2 1 0. - C3H4O4 (sodium malonate) salt 7 3.4 0.059 0.706 3 1. - C4H6O4 (sodium succinate) salt 7 1.2 0.083 0.833 3 1. - C4H6O5 (DL-sodium malate) salt 7 3 0.05 0.7 2 0. - Ca(C2H3O2)2 salt 1 0.16 0.2 2 0. - CaCl2 salt 1 0.02 0.2 3 0. - CdCl2 salt 1 0.005 0.005 1 0. - CoCl2 salt 1 0.005 0.1 2 0. - CsCl salt 1 0.05 0.05 1 0. - K3C6H5O7 salt 8.3 2.5 0.08 0.08 1 0. - KBr salt 1 0.15 0.15 1 0. - KCHO2 salt 7.3 14 0.014 0.014 1 0. - KH2PO4 salt 1.5 0.027 0.533 2 0. - KNO3 salt 6.9 3 0.067 0.067 1 0. - KSCN salt 8 0.013 0.013 1 0. - Li 2 SO 4 salt 2 0.1 0.1 6 0. - LiCl salt 10 0.1 0.1 1 0. - Mg(CHO2)2 salt 5.9 1 0.2 0.3 2 0. - MgCl2 salt 2 0.003 0.1 8 0. - MgSO4 salt 2.5 0.64 0.64 1 0. - Na3C6H5O7 salt 1.6 0.625 1 2 1. - NaCl salt 5 0.04 0.6 6 0. - NaH2PO4 salt 5 0.16 0.16 1 0. - NaSCN salt 6.9 8 0.025 0.025 1 0. - NiCl2 salt 4 0.001 0.001 1 0.
  • 34 Zn(C2H3O2)2 salt 1 0.2 0.2 3 0.