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Primary Reference Standard

When precision matters most, start with the highest benchmark—Primary Reference Standards from Lancetech Ltd are essential for achieving traceable and reproducible results in analytical testing. These ultra-pure substances serve as the definitive reference point for calibrating instruments, verifying methods, and producing secondary standards.


Ideal for pharmaceutical, environmental, and chemical laboratories, our primary standards ensure compliance with global regulatory requirements and support accurate quantification across a wide range of applications. Each standard is backed by detailed documentation and traceability to certified bodies, ensuring your data integrity from the first measurement onward.


Explore our range of primary reference materials and set a solid foundation for your lab’s analytical success.

Manufacturer: TOKU-E Item Number: S139-10x1ML
Streptomycin ReadyMade™ Solution 10 x 1 mL CAS number 3810-74-0 and purity (On Dried Basis): 650 - 850 µg/mg...
Price excludes taxes and shipping charges. Save -10%
£79.00 £87.77
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Manufacturer: TOKU-E Item Number: S142-10x1ML
Streptomycin ReadyMadeTM EDTA Solution 10 x 1 mL CAS number 3810-74-0 and purity (On Dried Basis): 650 - 850 µg/mg...
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£97.30 £108.11
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Manufacturer: TOKU-E Item Number: S008-1kG
Streptomycin Sulfate 1 kg CAS number 3810-74-0 and purity (On Dried Basis): 650 - 850 µg/mg...
Price excludes taxes and shipping charges. Save -10%
£1,184.93 £1,316.59
Manufacturer: TOKU-E Item Number: S008-100G
Streptomycin Sulfate 100 g CAS number 3810-74-0 and purity (On Dried Basis): 650 - 850 µg/mg...
Price excludes taxes and shipping charges. Save -10%
£170.03 £188.93
Manufacturer: TOKU-E Item Number: S008-25G
Streptomycin Sulfate 25 g CAS number 3810-74-0 and purity (On Dried Basis): 650 - 850 µg/mg...
Price excludes taxes and shipping charges. Save -10%
£51.54 £57.27
Manufacturer: TOKU-E Item Number: S040-1kG
Streptomycin Sulfate EP 1 kg CAS number 3810-74-0 and purity (On Dried Basis): 720 IU/mg...
Price excludes taxes and shipping charges. Save -10%
£1,184.93 £1,316.59
Manufacturer: TOKU-E Item Number: S040-100G
Streptomycin Sulfate EP 100 g CAS number 3810-74-0 and purity (On Dried Basis): 720 IU/mg...
Price excludes taxes and shipping charges. Save -10%
£170.03 £188.93
Manufacturer: TOKU-E Item Number: S040-25G
Streptomycin Sulfate EP 25 g CAS number 3810-74-0 and purity (On Dried Basis): 720 IU/mg...
Price excludes taxes and shipping charges. Save -10%
£51.54 £57.27
Manufacturer: TOKU-E Item Number: S071-1MG
Streptonigrin 1 mg CAS number 3930-19-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£245.66 £272.95
Manufacturer: TOKU-E Item Number: S071-5MG
Streptonigrin 5 mg CAS number 3930-19-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£855.95 £951.05
Manufacturer: TOKU-E Item Number: S009-1G
Streptozocin 1 g CAS number 18883-66-4 and purity (As Is): 98.5-101.5%...
Price excludes taxes and shipping charges. Save -10%
£139.21 £154.67
Manufacturer: TOKU-E Item Number: S123-1MG
Strychnospermine 1 mg CAS number 509-45-5 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£181.11 £201.24
Manufacturer: TOKU-E Item Number: S123-5MG
Strychnospermine 5 mg CAS number 509-45-5 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£633.41 £703.79
Manufacturer: TOKU-E Item Number: S117-1G
Sugammadex Sodium 1 g CAS number 343306-79-6 and purity (97-102% (On Dried Basis)...
Price excludes taxes and shipping charges. Save -10%
£1,314.99 £1,461.10
Manufacturer: TOKU-E Item Number: S117-100MG
Sugammadex Sodium 100 mg CAS number 343306-79-6 and purity (97-102% (On Dried Basis)...
Price excludes taxes and shipping charges. Save -10%
£196.53 £218.36
Manufacturer: TOKU-E Item Number: S117-250MG
Sugammadex Sodium 250 mg CAS number 343306-79-6 and purity (97-102% (On Dried Basis)...
Price excludes taxes and shipping charges. Save -10%
£481.20 £534.66
Manufacturer: TOKU-E Item Number: S010-10MG
Sulbactam 10 mg CAS number 68373-14-8 and purity (On Dried Basis): ≥ 99.0%...
Price excludes taxes and shipping charges. Save -10%
£74.18 £82.42
Manufacturer: TOKU-E Item Number: S010-50MG
Sulbactam 50 mg CAS number 68373-14-8 and purity (On Dried Basis): ≥ 99.0%...
Price excludes taxes and shipping charges. Save -10%
£324.65 £360.72
Manufacturer: TOKU-E Item Number: S011-10MG
Sulbactam Sodium 10 mg CAS number 69388-84-7 and purity (Anhydroud): 886 - 941 µg/mg...
Price excludes taxes and shipping charges. Save -10%
£71.29 £79.21
Manufacturer: TOKU-E Item Number: S011-500MG
Sulbactam Sodium 500 mg CAS number 69388-84-7 and purity (Anhydrous): 886 - 941 µg/mg...
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£133.43 £148.25
Manufacturer: TOKU-E Item Number: S041-1G
Sulbenicillin Sodium 1 g CAS number 28002-18-8 and purity ≥ 900 µg/mg...
Price excludes taxes and shipping charges. Save -10%
£212.90 £236.56
Manufacturer: TOKU-E Item Number: S041-250MG
Sulbenicillin Sodium 250 mg CAS number 28002-18-8 and purity ≥ 900 µg/mg...
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£78.03 £86.70
Manufacturer: TOKU-E Item Number: S118-10G
Sulfachloropyridazine 10 g CAS number 80-32-0 and purity ≥98% (HPLC)...
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£84.29 £93.66
Manufacturer: TOKU-E Item Number: S118-50G
Sulfachloropyridazine 50 g CAS number 80-32-0 and purity ≥98% (HPLC)...
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£350.18 £389.09
Manufacturer: TOKU-E Item Number: S037-1G
Sulfachloropyridazine Sodium 1 g CAS number 23282-55-5 and purity (On Dried Basis: ≥99%)...
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£107.90 £119.88
Manufacturer: TOKU-E Item Number: S037-5G
Sulfachloropyridazine Sodium 5 g CAS number 23282-55-6 and purity (On Dried Basis: ≥99%)...
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£445.07 £494.52
Manufacturer: TOKU-E Item Number: S012-100G
Sulfadiazine 100 g CAS number 68-35-9 and purity (On Dried Basis): 99.0% - 101.0%...
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£79.96 £88.84
Manufacturer: TOKU-E Item Number: S012-25G
Sulfadiazine 25 g CAS number 68-35-9 and purity (On Dried Basis): 99.0% - 101.0%...
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£43.35 £48.17
Manufacturer: TOKU-E Item Number: S061-25G
Sulfadiazine Sodium 25 g CAS number 547-32-0 and purity (On Dried Basis): 99.0 - 100.5%...
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£86.70 £96.34
Manufacturer: TOKU-E Item Number: S035-10G
Sulfadoxine (Sulphadoxine) 10 g CAS number 2447-57-6 and purity (On Dried Basis): 99.0-101.0%...
Price excludes taxes and shipping charges. Save -10%
£79.00 £87.77
Manufacturer: TOKU-E Item Number: S035-25G
Sulfadoxine (Sulphadoxine) 25 g CAS number 2447-57-6 and purity (On Dried Basis): 99.0-101.0%...
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£179.19 £199.09
Manufacturer: TOKU-E Item Number: S033-250G
Sulfamerazine 250 g CAS number 127-79-7 and purity (On Dried Basis): 99.0-101.0%...
Price excludes taxes and shipping charges. Save -10%
£152.69 £169.66
Manufacturer: TOKU-E Item Number: S033-50G
Sulfamerazine 50 g CAS number 127-79-7 and purity (On Dried Basis): 99.0-101.0%...
Price excludes taxes and shipping charges. Save -10%
£30.83 £34.25
Manufacturer: TOKU-E Item Number: S033-500G
Sulfamerazine 500 g CAS number 127-79-7 and purity (On Dried Basis): 99.0-101.0%...
Price excludes taxes and shipping charges. Save -10%
£181.11 £201.24
Manufacturer: TOKU-E Item Number: S059-250G
Sulfamerazine Sodium 250 g CAS number 127-58-2 and purity (On Dried Basis): 99.0-101.0%...
Price excludes taxes and shipping charges. Save -10%
£97.30 £108.11
Manufacturer: TOKU-E Item Number: S026-100G
Sulfamethazine 100 g CAS number 57-68-1 and purity (On Dried Basis): 99.0% - 100.5%...
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£70.33 £78.14
Manufacturer: TOKU-E Item Number: S026-25G
Sulfamethazine 25 g CAS number 57-68-1 and purity (On Dried Basis): 99.0% - 100.5%...
Price excludes taxes and shipping charges. Save -10%
£39.50 £43.89
Manufacturer: TOKU-E Item Number: S066-5G
Sulfamethazine sodium 5 g CAS number 1981-58-4 and purity (On Dried Basis): 99.0% - 101.0%...
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£35.64 £39.60
Manufacturer: TOKU-E Item Number: S119-1G
Sulfamethizole 1 g CAS number 144-82-1 and purity ≥98 % (by HPLC)...
Price excludes taxes and shipping charges. Save -10%
£160.88 £178.76
Manufacturer: TOKU-E Item Number: S119-250MG
Sulfamethizole 250 mg CAS number 144-82-1 and purity ≥98 % (by HPLC)...
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£49.13 £54.59
Manufacturer: TOKU-E Item Number: S045-100G
Sulfamethoxazole 100 g CAS number 723-46-6 and purity (On Dried Basis): 99.0% - 101.0%...
Price excludes taxes and shipping charges. Save -10%
£406.06 £451.17
Manufacturer: TOKU-E Item Number: S045-50G
Sulfamethoxazole 50 g CAS number 723-46-6 and purity (On Dried Basis): 99.0% - 101.0%...
Price excludes taxes and shipping charges. Save -10%
£223.50 £248.33
Manufacturer: TOKU-E Item Number: S143-10x1ML
Sulfamethoxazole ReadyMadeTM Solution 10 x 1mL CAS number 723-46-6 and purity (on dried basis): 99.0% - 101.0%...
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£112.71 £125.24
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Manufacturer: TOKU-E Item Number: S063-25MG
Sulfamethoxazole related compound A EvoPure® 25 mg CAS number 21312-10-7 and purity ≥95% by HPLC...
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£131.02 £145.57
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Manufacturer: TOKU-E Item Number: S063-500MG
Sulfamethoxazole related compound A EvoPure® 500 mg CAS number 21312-10-7 and purity ≥95% by HPLC...
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£382.94 £425.48
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Manufacturer: TOKU-E Item Number: S064-100MG
Sulfamethoxazole related compound B EvoPure® 100 mg CAS number 135529-16-7 and purity ≥95% by HPLC...
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£329.47 £366.08
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Manufacturer: TOKU-E Item Number: S121-1G
Sulfamethoxazole Sodium 1 g CAS number 4563-84-2 and purity ≥97% (dried basis)...
Price excludes taxes and shipping charges. Save -10%
£101.63 £112.93
Manufacturer: TOKU-E Item Number: S121-25G
Sulfamethoxazole Sodium 25 g CAS number 4563-84-4 and purity ≥97% (dried basis)...
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£1,126.17 £1,251.30
Manufacturer: TOKU-E Item Number: S121-5G
Sulfamethoxazole Sodium 5g CAS number 4563-84-3 and purity ≥97% (dried basis)...
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£286.60 £318.44
Manufacturer: TOKU-E Item Number: S013-1G
Sulfamonomethoxine 1 g CAS number 1220-83-3 and purity (On Dried Basis): ≥99.0%...
Price excludes taxes and shipping charges. Save -10%
£374.27 £415.85
Manufacturer: TOKU-E Item Number: S013-250MG
Sulfamonomethoxine 250 mg CAS number 1220-83-3 and purity (On Dried Basis): ≥99.0%...
Price excludes taxes and shipping charges. Save -10%
£137.76 £153.07
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