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Reference Weights & Mass Standards
Ensure precise calibration with reliable reference weights and mass standards built to ASTM and OIML specifications. Ideal for analytical and precision balances, these certified weights are available individually or in sets, in various classes and materials. Contact us at 888-4-LABPRO (888-452-2776) for competitive bulk pricing, with next-day service in California and same-day service for will-calls.

CalPak ASTM 5g-1mg UC Accrd TR - 30391798

$613.00

CalPak ASTM 2g-1mg UC Accrd TR - 30391799

$614.00

Weight 2P EB CYL 5kg UC Accrd TR - 30390355

$963.00

Weight 2P EB CYL 4kg UC Accrd TR - 30390353

$938.00

Weight 2P EB CYL 5kg UC Non-Accrd TR - 30390324

$892.00

Weight 2P EB CYL 4kg UC Non-Accrd TR - 30390322

$801.00

Weight 2P EB CYL 5kg UC No Cert TR - 30390293

$814.00

Weight 2P EB CYL 4kg UC No Cert TR - 30390291

$686.00

Weight 2P EB GH 30kg UC Accrd TR - 30390363

$4,220.00

Weight 2P EB GH 25kg UC Accrd TR - 30390362

$3,360.00

Weight 2P EB GH 24kg UC Accrd TR - 30390361

$3,074.00

Weight 2P EB GH 20kg UC Accrd TR - 30390360

$2,799.00

Weight 2P EB GH 16kg UC Accrd TR - 30390359

$2,489.00

Weight 2P EB GH 10kg UC Accrd TR - 30390358

$2,016.00

Weight 2P EB GH 8kg UC Accrd TR - 30390357

$1,692.00

Weight 2P EB GH 5kg UC Accrd TR - 30390356

$1,389.00

Weight 2P EB GH 4kg UC Accrd TR - 30390354

$1,356.00

Weight 2P EB CYL 3kg UC Accrd TR - 30390352

$808.00

Weight 2P EB CYL 2kg UC Accrd TR - 30390351

$538.00

Weight 2P EB CYL 1500g UC Accrd TR - 30390350

$593.00

Weight 2P EB CYL 1000g UC Accrd TR - 30390349

$439.00

Weight 2P EB CYL 600g UC Accrd TR - 30390348

$463.00

Weight 2P EB CYL 500g UC Accrd TR - 30390347

$410.00

Weight 2P EB CYL 400g UC Accrd TR - 30390346

$392.00

Weight 2P EB CYL 300g UC Accrd TR - 30390345

$375.00

Weight 2P EB CYL 200g UC Accrd TR - 30390344

$344.00

Weight 2P EB CYL 160g UC Accrd TR - 30390343

$392.00

Weight 2P EB CYL 150g UC Accrd TR - 30390342

$392.00

Weight 2P EB CYL 100g UC Accrd TR - 30390341

$263.00

Weight 2P EB CYL 80g UC Accrd TR - 30390340

$253.00

Weight 2P EB CYL 70g UC Accrd TR - 30390339

$253.00

Weight 2P EB CYL 60g UC Accrd TR - 30390338

$253.00

Weight 2P EB CYL 50g UC Accrd TR - 30390337

$253.00

Weight 2P EB CYL 40g UC Accrd TR - 30390336

$253.00

Weight 2P EB CYL 30g UC Accrd TR - 30390335

$253.00

Weight 2P EB CYL 20g UC Accrd TR - 30390334

$253.00

Weight 2P EB CYL 10g UC Accrd TR - 30390333

$253.00

Weight 2P EB GH 30kg UC Non-Accrd TR - 30390332

$3,831.00

Weight 2P EB GH 25kg UC Non-Accrd TR - 30390331

$3,218.00

Weight 2P EB GH 24kg UC Non-Accrd TR - 30390330

$2,953.00

Weight 2P EB GH 20kg UC Non-Accrd TR - 30390329

$2,643.00

Weight 2P EB GH 16kg UC Non-Accrd TR - 30390328

$2,468.00

Weight 2P EB GH 10kg UC Non-Accrd TR - 30390327

$1,841.00

Weight 2P EB GH 8kg UC Non-Accrd TR - 30390326

$1,629.00

Weight 2P EB GH 5kg UC Non-Accrd TR - 30390325

$1,311.00

Weight 2P EB GH 4kg UC Non-Accrd TR - 30390323

$1,202.00

Weight 2P EB CYL 3kg UC Non-Accrd TR - 30390321

$667.00

Weight 2P EB CYL 2kg UC Non-Accrd TR - 30390320

$452.00

Weight 2P EB CYL 1500g UC Non-Accrd TR - 30390319

$452.00

Weight 2P EB CYL 1000g UC Non-Accrd TR - 30390318

$356.00

Weight 2P EB CYL 600g UC Non-Accrd TR - 30390317

$352.00

Weight 2P EB CYL 500g UC Non-Accrd TR - 30390316

$320.00

Weight 2P EB CYL 400g UC Non-Accrd TR - 30390315

$305.00

Weight 2P EB CYL 300g UC Non-Accrd TR - 30390314

$275.00

Weight 2P EB CYL 200g UC Non-Accrd TR - 30390313

$262.00

Weight 2P EB CYL 160g UC Non-Accrd TR - 30390312

$247.00

Weight 2P EB CYL 150g UC Non-Accrd TR - 30390311

$247.00

Weight 2P EB CYL 100g UC Non-Accrd TR - 30390310

$190.00

Weight 2P EB CYL 80g UC Non-Accrd TR - 30390309

$208.00

Weight 2P EB CYL 70g UC Non-Accrd TR - 30390308

$208.00

Weight 2P EB CYL 60g UC Non-Accrd TR - 30390307

$208.00

Weight 2P EB CYL 50g UC Non-Accrd TR - 30390306

$170.00

Weight 2P EB CYL 40g UC Non-Accrd TR - 30390305

$175.00

Weight 2P EB CYL 30g UC Non-Accrd TR - 30390304

$170.00

Weight 2P EB CYL 20g UC Non-Accrd TR - 30390303

$170.00

Weight 2P EB CYL 10g UC Non-Accrd TR - 30390302

$170.00

Weight 2P EB GH 30kg UC No Cert TR - 30390301

$3,656.00

Weight 2P EB GH 25kg UC No Cert TR - 30390300

$2,289.90

Weight 2P EB GH 24kg UC No Cert TR - 30390299

$2,145.40

Weight 2P EB GH 20kg UC No Cert TR - 30390298

$2,584.00

Weight 2P EB GH 16kg UC No Cert TR - 30390297

$2,403.00

Weight 2P EB GH 10kg UC No Cert TR - 30390296

$1,739.00

Weight 2P EB GH 8kg UC No Cert TR - 30390295

$1,134.75

Weight 2P EB GH 5kg UC No Cert TR - 30390294

$1,273.00

Weight 2P EB GH 4kg UC No Cert TR - 30390292

$872.10

Weight 2P EB CYL 3kg UC No Cert TR - 30390290

$537.00

Weight 2P EB CYL 2kg UC No Cert TR - 30390289

$361.00

Weight 2P EB CYL 1500g UC No Cert TR - 30390288

$348.00

Weight 2P EB CYL 1000g UC No Cert TR - 30390287

$307.00

Weight 2P EB CYL 600g UC No Cert TR - 30390286

$277.00

Weight 2P EB CYL 500g UC No Cert TR - 30390285

$258.00

Weight 2P EB CYL 400g UC No Cert TR - 30390284

$246.00

Weight 2P EB CYL 300g UC No Cert TR - 30390283

$210.00

Weight 2P EB CYL 200g UC No Cert TR - 30390282

$181.00

Weight 2P EB CYL 160g UC No Cert TR - 30390281

$190.00

Weight 2P EB CYL 150g UC No Cert TR - 30390280

$190.00

Weight 2P EB CYL 100g UC No Cert TR - 30390279

$151.00

Weight 2P EB CYL 80g UC No Cert TR - 30390278

$165.00

Weight 2P EB CYL 70g UC No Cert TR - 30390277

$165.00

Weight 2P EB CYL 60g UC No Cert TR - 30390276

$153.00

Weight 2P EB CYL 50g UC No Cert TR - 30390275

$125.00

Weight 2P EB CYL 40g UC No Cert TR - 30390274

$129.00

Weight 2P EB CYL 30g UC No Cert TR - 30390273

$120.00

Weight 2P EB CYL 20g UC No Cert TR - 30390272

$120.00

Weight 2P EB CYL 10g UC No Cert TR - 30390271

$120.00

Weight 1P ASTM 1mg UC Non-Accrd TR - 30390270

$178.00

Weight 2P ASTM 50kg UC Accrd TR - 30390269

$16,199.00

Weight 2P ASTM 30kg UC Accrd TR - 30390268

$10,761.00

Weight 2P ASTM 25kg UC Accrd TR - 30390267

$8,185.00

Weight 2P ASTM 20kg UC Accrd TR - 30390266

$4,679.00

Weight 2P ASTM 10kg UC Accrd TR - 30390265

$4,400.00

Weight 2P ASTM 5kg UC Accrd TR - 30390264

$2,357.00

Weight 2P ASTM 3kg UC Accrd TR - 30390263

$1,953.00

Weight 2P ASTM 2kg UC Accrd TR - 30390262

$1,584.00

Weight 2P ASTM 1kg UC Accrd TR - 30390261

$1,095.00

Weight 2P ASTM 500g UC Accrd TR - 30390260

$540.00

Weight 2P ASTM 300g UC Accrd TR - 30390259

$454.00

Weight 2P ASTM 200g UC Accrd TR - 30390258

$442.00

Weight 2P ASTM 100g UC Accrd TR - 30390257

$288.00

Weight 2P ASTM 50g UC Accrd TR - 30390256

$260.00

Weight 2P ASTM 30g UC Accrd TR - 30390255

$260.00

Weight 2P ASTM 20g UC Accrd TR - 30390254

$240.00

Weight 2P ASTM 10g UC Accrd TR - 30390253

$229.00

Weight 2P ASTM 5g UC Accrd TR - 30390252

$229.00

Weight 2P ASTM 3g UC Accrd TR - 30390251

$229.00

Weight 2P ASTM 2g UC Accrd TR - 30390250

$229.00

Weight 2P ASTM 1g UC Accrd TR - 30390249

$229.00

Weight 1P ASTM 500mg UC Accrd TR - 30390248

$210.00

Weight 1P ASTM 300mg UC Accrd TR - 30390247

$210.00

Weight 1P ASTM 200mg UC Accrd TR - 30390246

$210.00

Weight 1P ASTM 100mg UC Accrd TR - 30390245

$210.00

Weight 1P ASTM 50mg UC Accrd TR - 30390244

$210.00

Weight 1P ASTM 30mg UC Accrd TR - 30390243

$210.00

Weight 1P ASTM 20mg UC Accrd TR - 30390242

$210.00

Weight 1P ASTM 10mg UC Accrd TR - 30390241

$210.00

Weight 1P ASTM 5mg UC Accrd TR - 30390240

$210.00

Weight 1P ASTM 3mg UC Accrd TR - 30390239

$210.00

Weight 1P ASTM 2mg UC Accrd TR - 30390238

$210.00

Weight 1P ASTM 1mg UC Accrd TR - 30390237

$210.00

Weight 2P ASTM 50kg UC Non-Accrd TR - 30390236

$15,928.00

Weight 2P ASTM 30kg UC Non-Accrd TR - 30390235

$9,801.00

Weight 2P ASTM 25kg UC Non-Accrd TR - 30390234

$8,093.00

Weight 2P ASTM 20kg UC Non-Accrd TR - 30390233

$4,549.00

Weight 2P ASTM 10kg UC Non-Accrd TR - 30390232

$3,908.00

Weight 2P ASTM 5kg UC Non-Accrd TR - 30390231

$2,103.00

Weight 2P ASTM 3kg UC Non-Accrd TR - 30390230

$1,830.00

Weight 2P ASTM 2kg UC Non-Accrd TR - 30390229

$1,466.00

Weight 2P ASTM 1kg UC Non-Accrd TR - 30390228

$974.00

Weight 2P ASTM 500g UC Non-Accrd TR - 30390227

$480.00

Weight 1P ASTM 300g UC Non-Accrd TR - 30390226

$394.00

Weight 2P ASTM 200g UC Non-Accrd TR - 30390225

$352.00

Weight 2P ASTM 100g UC Non-Accrd TR - 30390224

$240.00

Weight 2P ASTM 50g UC Non-Accrd TR - 30390223

$235.00

Weight 2P ASTM 30g UC Non-Accrd TR - 30390222

$225.00

Weight 2P ASTM 20g UC Non-Accrd TR - 30390221

$217.00

Weight 2P ASTM 10g UC Non-Accrd TR - 30390220

$217.00

Weight 2P ASTM 5g UC Non-Accrd TR - 30390219

$217.00

Weight 2P ASTM 3g UC Non-Accrd TR - 30390218

$217.00

Weight 2P ASTM 2g UC Non-Accrd TR - 30390217

$201.00

Weight 2P ASTM 1g UC Non-Accrd TR - 30390216

$201.00

Weight 1P ASTM 500mg UC Non-Accrd TR - 30390215

$178.00

Weight 1P ASTM 300mg UC Non-Accrd TR - 30390214

$178.00

Weight 1P ASTM 200mg UC Non-Accrd TR - 30390213

$178.00

Weight 1P ASTM 100mg UC Non-Accrd TR - 30390212

$178.00

Weight 1P ASTM 50mg UC Non-Accrd TR - 30390211

$178.00

Weight 1P ASTM 30mg UC Non-Accrd TR - 30390210

$178.00

Weight 1P ASTM 20mg UC Non-Accrd TR - 30390209

$178.00

Weight 1P ASTM 10mg UC Non-Accrd TR - 30390208

$178.00

Weight 1P ASTM 5mg UC Non-Accrd TR - 30390207

$178.00

Weight 1P ASTM 3mg UC Non-Accrd TR - 30390206

$178.00

Weight 1P ASTM 2mg UC Non-Accrd TR - 30390205

$178.00

Weight 2P ASTM 50kg UC No Cert TR - 30390204

$14,887.00

Weight 2P ASTM 30kg UC No Cert TR - 30390203

$9,744.00

Weight 2P ASTM 25kg UC No Cert TR - 30390202

$8,002.00

Weight 2P ASTM 20kg UC No Cert TR - 30390201

$4,323.00

Weight 2P ASTM 10kg UC No Cert TR - 30390200

$3,706.00

Weight 2P ASTM 5kg UC No Cert TR - 30390199

$2,007.00

Weight 2P ASTM 3kg UC No Cert TR - 30390198

$1,740.00

Weight 2P ASTM 2kg UC No Cert TR - 30390197

$1,356.00

Weight 2P ASTM 1kg UC No Cert TR - 30390196

$856.00

Weight 2P ASTM 500g UC No Cert TR - 30390195

$419.00

Weight 1P ASTM 300g UC No Cert TR - 30390194

$307.00

Weight 2P ASTM 200g UC No Cert TR - 30390193

$288.00

Weight 2P ASTM 100g UC No Cert TR - 30390192

$178.00

Weight 2P ASTM 50g UC No Cert TR - 30390191

$167.00

Weight 2P ASTM 30g UC No Cert TR - 30390190

$158.00

Weight 2P ASTM 20g UC No Cert TR - 30390189

$150.00

Weight 2P ASTM 10g UC No Cert TR - 30390188

$150.00

Weight 2P ASTM 5g UC No Cert TR - 30390187

$150.00

Weight 2P ASTM 3g UC No Cert TR - 30390186

$150.00

Weight 2P ASTM 2g UC No Cert TR - 30390185

$135.00

Weight 2P ASTM 1g UC No Cert TR - 30390184

$135.00

Weight 1P ASTM 500mg UC No Cert TR - 30390183

$132.00

Weight 1P ASTM 300mg UC No Cert TR - 30390182

$132.00

Weight 1P ASTM 200mg UC No Cert TR - 30390181

$132.00

Weight 1P ASTM 100mg UC No Cert TR - 30390180

$132.00

Weight 1P ASTM 50mg UC No Cert TR - 30390179

$132.00

Weight 1P ASTM 30mg UC No Cert TR - 30390178

$132.00

Weight 1P ASTM 20mg UC No Cert TR - 30390177

$132.00

Weight 1P ASTM 10mg UC No Cert TR - 30390176

$132.00

Weight 1P ASTM 5mg UC No Cert TR - 30390175

$132.00

Weight 1P ASTM 3mg UC No Cert TR - 30390174

$132.00

Weight 1P ASTM 2mg UC No Cert TR - 30390173

$132.00

Weight 1P ASTM 1mg UC No Cert TR - 30390172

$132.00

Weight Set ASTM 50kg-1g UC Accrd TR - 30390171

$41,926.00

Weight Set ASTM 50kg-1mg UC Accrd TR - 30390170

$43,404.00

Weight Set ASTM 30kg-1g UC Accrd TR - 30390169

$28,919.00

Weight Set ASTM 30kg-1mg UC Accrd TR - 30390168

$30,701.00

Weight Set ASTM 25kg-1g UC Accrd TR - 30390167

$27,336.00

Weight Set ASTM 25kg-1mg UC Accrd TR - 30390166

$28,892.00

Weight Set ASTM 20kg-1g UC Accrd TR - 30390165

$19,536.00

Weight Set ASTM 20kg-1mg UC Accrd TR - 30390164

$21,351.00

Weight Set ASTM 10kg-1g UC Accrd TR - 30390163

$14,562.00

Weight Set ASTM 10kg-1mg UC Accrd TR - 30390162

$16,277.00

Weight Set ASTM 5kg-1g UC Accrd TR - 30390161

$11,138.00

Weight Set ASTM 5kg-1mg UC Accrd TR - 30390160

$12,676.00

Weight Set ASTM 2kg-1g UC Accrd TR - 30390159

$7,159.00

Weight Set ASTM 2kg-1mg UC Accrd TR - 30390158

$8,944.00

Weight Set ASTM 1kg-1g UC Accrd TR - 30390157

$5,803.00

Weight Set ASTM 1kg-1mg UC Accrd TR - 30390156

$7,594.00

Weight Set ASTM 500g-1g UC Accrd TR - 30390155

$4,297.00

Weight Set ASTM 500g-1mg UC Accrd TR - 30390154

$6,126.00

Weight Set ASTM 200g-1g UC Accrd TR - 30390153

$2,415.00

Weight Set ASTM 200g-1mg UC Accrd TR - 30390152

$4,245.00

Weight Set ASTM 100g-1g UC Accrd TR - 30390151

$2,110.00

Weight Set ASTM 100g-100mg UC Accrd TR - 30390150

$2,753.00

Weight Set ASTM 100g-10mg UC Accrd TR - 30390149

$3,383.00

Weight Set ASTM 100g-5mg UC Accrd TR - 30390148

$3,200.00

Weight Set ASTM 100g-1mg UC Accrd TR - 30390147

$3,895.00

Weight Set ASTM 50g-1g UC Accrd TR - 30390146

$2,025.00

Weight Set ASTM 50g-100mg UC Accrd TR - 30390145

$2,578.00

Weight Set ASTM 50g-10mg UC Accrd TR - 30390144

$3,200.00

Weight Set ASTM 50g-5mg UC Accrd TR - 30390143

$3,108.00

Weight Set ASTM 50g-1mg UC Accrd TR - 30390142

$3,714.00

Weight Set ASTM 20g-1g UC Accrd TR - 30390141

$1,577.00

Weight Set ASTM 20g-100mg UC Accrd TR - 30390140

$2,310.00

Weight Set ASTM 20g-10mg UC Accrd TR - 30390139

$2,778.00

Weight Set ASTM 20g-5mg UC Accrd TR - 30390138

$2,889.00

Weight Set ASTM 20g-1mg UC Accrd TR - 30390137

$3,323.00

Weight Set ASTM 500mg-10mg UC Accrd TR - 30390136

$1,760.00

Weight Set ASTM 500mg-1mg UC Accrd TR - 30390135

$2,188.00

Weight Set ASTM 50kg-1g UC Non-Accrd TR - 30390134

$41,196.00

Weight Set ASTM 50kg-1mg UC Non-Accrd TR - 30390133

$42,821.00

Weight Set ASTM 30kg-1g UC Non-Accrd TR - 30390132

$28,368.00

Weight Set ASTM 30kg-1mg UC Non-Accrd TR - 30390131

$29,571.00

Weight Set ASTM 25kg-1g UC Non-Accrd TR - 30390130

$26,817.00

Weight Set ASTM 25kg-1mg UC Non-Accrd TR - 30390129

$27,842.00

Weight Set ASTM 20kg-1g UC Non-Accrd TR - 30390128

$19,106.00

Weight Set ASTM 20kg-1mg UC Non-Accrd TR - 30390127

$20,261.00

Weight Set ASTM 10kg-1g UC Non-Accrd TR - 30390126

$13,810.00

Weight Set ASTM 10kg-1mg UC Non-Accrd TR - 30390125

$15,213.00

Weight Set ASTM 5kg-1g UC Non-Accrd TR - 30390124

$10,138.00

Weight Set ASTM 5kg-1mg UC Non-Accrd TR - 30390123

$11,570.00

Weight Set ASTM 2kg-1g UC Non-Accrd TR - 30390122

$6,685.00

Weight Set ASTM 2kg-1mg UC Non-Accrd TR - 30390121

$7,946.00

Weight Set ASTM 1kg-1g UC Non-Accrd TR - 30390120

$5,207.00

Weight Set ASTM 1kg-1mg UC Non-Accrd TR - 30390119

$6,620.00

Weight Set ASTM 500g-1g UC Non-Accrd TR - 30390118

$3,804.00

Weight Set ASTM 500g-1mg UC Non-Accrd TR - 30390117

$5,186.00

Weight Set ASTM 200g-1g UC Non-Accrd TR - 30390116

$1,825.00

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