This table indicates the grams of solid ammonium sulphate (at 25°C) to be added to one litre of solution to produce a desired change in the concentration of ammonium sulphate.  A saturated solution is 4.1 M and requires 767 grams of salt per litre. This table is based on Green and Hughes in Methods Enzymol. 1, 67-90 (1955).

How to use ammonium sulphate concentration table:

Select your initial concentration of ammonium sulphate in percent from saturation from the left column, then select required final concentration of ammonium sulphate in percent from saturation from the top row. The intersection  point will give you and exact amount of ammonium sulphate (AmSO4) in grams needed for 1 litre of initial solution.

%

10

15

20

25

30

33

35

40

45

50

55

60

65

70

75

80

85

90

95

100

0

56

84

114

144

176

196

209

243

277

313

351

390

430

472

516

561

610

662

713

767

10

 

28

57

86

118

137

190

183

216

251

288

326

365

406

449

494

540

592

640

694

15

 

28

57

88

107

120

153

185

220

256

294

333

373

415

459

506

556

605

657

20

 

29

59

78

91

123

155

189

225

262

300

340

382

424

471

520

569

619

25

 

30

49

61

93

125

158

193

230

267

307

348

390

436

485

533

583

30

 

19

30

62

94

127

162

198

235

273

314

356

401

449

496

546

33

 

12

43

74

107

142

177

214

252

292

333

378

426

472

522

35

 

31

63

94

129

164

200

238

278

319

364

411

457

506

40

 

31

63

97

132

168

205

245

285

328

375

420

469

45

 

32

65

99

134

171

210

250

293

339

383

431

50

 

33

66

101

137

176

214

256

302

345

392

55

 

33

67

103

141

179

220

264

307

353

60

 

34

69

105

143

183

227

269

314

65

 

34

70

107

147

190

232

275

70

 

35

72

110

153

194

237

75

 

36

74

115

155

198

80

 

38

77

117

157

85

 

39

77

118

90

 

38

77

95

 

39

 


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