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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.

Spiramycin I 25 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S094-25MG
Spiramycin I 25 mg CAS number 8025-81-8 and purity ≥99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£296.71 £329.68
Spiramycin I 5 mg
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Manufacturer: TOKU-E Item Number: S094-5MG
Spiramycin I 5 mg CAS number 8025-81-8 and purity ≥99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£85.74 £95.27
spiro-Oxanthromicin A 1 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S133-0.1MG
spiro-Oxanthromicin A 1 mg CAS number 1616622-10-6 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£146.92 £163.24
spiro-Oxanthromicin A 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S133-0.5MG
spiro-Oxanthromicin A 5 mg CAS number 1616622-10-6 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£512.03 £568.92
Sporidesmolide 25 mg
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Manufacturer: TOKU-E Item Number: S095-25MG
Sporidesmolide 25 mg CAS number 11113-90-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£832.82 £925.36
Sporidesmolide 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S095-5MG
Sporidesmolide 5 mg CAS number 11113-90-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£238.43 £264.92
Sporidesmolide I 0.5 mg
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Manufacturer: TOKU-E Item Number: S096-0.5MG
Sporidesmolide I 0.5 mg CAS number 2900-38-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£256.26 £284.73
Sporidesmolide I 2.5 mg
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Manufacturer: TOKU-E Item Number: S096-2.5MG
Sporidesmolide I 2.5 mg CAS number 2900-38-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£894.48 £993.87
Sporidesmolide II 0.5 mg
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Manufacturer: TOKU-E Item Number: S097-0.5MG
Sporidesmolide II 0.5 mg CAS number 3200-75-7 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£256.26 £284.73
Sporidesmolide II 2.5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S097-2.5MG
Sporidesmolide II 2.5 mg CAS number 3200-75-7 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£894.48 £993.87
Sporidesmolide III 0.5 mg
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Manufacturer: TOKU-E Item Number: S098-0.5MG
Sporidesmolide III 0.5 mg CAS number 1803-67-4 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£256.26 £284.73
Sporidesmolide III 2.5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S098-2.5MG
Sporidesmolide III 2.5 mg CAS number 1803-67-4 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£894.48 £993.87
Sporidesmolide V 0.5 mg
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Manufacturer: TOKU-E Item Number: S099-0.5MG
Sporidesmolide V 0.5 mg CAS number 127072-57-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£256.26 £284.73
Sporidesmolide V 2.5 mg
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Manufacturer: TOKU-E Item Number: S099-2.5MG
Sporidesmolide V 2.5 mg CAS number 127072-57-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£894.48 £993.87
Stachybotrylactam 0.5 mg
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Manufacturer: TOKU-E Item Number: S100-0.5MG
Stachybotrylactam 0.5 mg CAS number 163391-76-2 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£238.43 £264.92
Stachybotrylactam 2.5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S100-2.5MG
Stachybotrylactam 2.5 mg CAS number 163391-76-2 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£832.82 £925.36
Stachybotrysin B 1 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S125-1MG
Stachybotrysin B 1 mg CAS number 2098376-42-0 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£205.68 £228.53
Stachybotrysin B 5 mg
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Manufacturer: TOKU-E Item Number: S125-5MG
Stachybotrysin B 5 mg CAS number 2098376-42-0 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£719.63 £799.59
Stauprimide 0.5 mg
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Manufacturer: TOKU-E Item Number: S101-0.5MG
Stauprimide 0.5 mg CAS number 154589-96-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£307.79 £341.99
Stauprimide 2.5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S101-2.5MG
Stauprimide 2.5 mg CAS number 154589-96-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£1,072.70 £1,191.89
Staurosporine 25 mg
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Manufacturer: TOKU-E Item Number: S070-25MG
Staurosporine 25 mg CAS number 62996-74-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£756.23 £840.26
Staurosporine 5 mg
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Manufacturer: TOKU-E Item Number: S070-5MG
Staurosporine 5 mg CAS number 62996-74-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£216.76 £240.84
Steffimycin B 1 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S102-1MG
Steffimycin B 1 mg CAS number 54526-94-2 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£238.43 £264.92
Steffimycin B 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S102-5MG
Steffimycin B 5 mg CAS number 54526-94-2 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£830.90 £923.22
Stephacidin B 0.5 mg
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Manufacturer: TOKU-E Item Number: S134-0.5MG
Stephacidin B 0.5 mg CAS number 360765-75-9 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£175.82 £195.35
Stephacidin B 2.5 mg
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Manufacturer: TOKU-E Item Number: S134-2.5MG
Stephacidin B 2.5 mg CAS number 360765-75-9 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£614.63 £682.92
Sterigmatocystin 1 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S103-1MG
Sterigmatocystin 1 mg CAS number 10048-13-2 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£117.53 £130.59
Sterigmatocystin 5 mg
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Manufacturer: TOKU-E Item Number: S103-5MG
Sterigmatocystin 5 mg CAS number 10048-13-2 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£407.98 £453.31
Streptidine EvoPure® 100 mg
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Manufacturer: TOKU-E Item Number: S067-100MG
Streptidine EvoPure® 100 mg CAS number 85-17-6 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£394.01 £437.79
Streptimidone 0.5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S128-0.5MG
Streptimidone 0.5 mg CAS number 738-72-7 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£175.82 £195.35
Streptimidone 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S128-5MG
Streptimidone 5 mg CAS number 738-72-7 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£614.63 £682.92
Streptomycin 25 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S135-25MG
Streptomycin 25 mg CAS number 57-92-1 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£173.89 £193.21
Streptomycin 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: S135-5MG
Streptomycin 5 mg CAS number 57-92-1 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£49.62 £55.13
Streptomycin ReadyMadeâ„¢ Solution 10 x 1 mL
Actual product may differ from image
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%
£76.59 £85.10
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Streptomycin ReadyMadeTM EDTA Solution 10 x 1 mL
Actual product may differ from image
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...
Price excludes taxes and shipping charges. Save -10%
£94.41 £104.90
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Streptomycin Sulfate 1 kg
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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%
£1,150.25 £1,278.06
Streptomycin Sulfate 100 g
Actual product may differ from image
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%
£164.74 £183.04
Streptomycin Sulfate 25 g
Actual product may differ from image
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%
£49.62 £55.13
Streptomycin Sulfate EP 1 kg
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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%
£1,150.25 £1,278.06
Streptomycin Sulfate EP 100 g
Actual product may differ from image
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%
£164.74 £183.04
Streptomycin Sulfate EP 25 g
Actual product may differ from image
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%
£49.62 £55.13
Streptonigrin 1 mg
Actual product may differ from image
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%
£238.43 £264.92
Streptonigrin 5 mg
Actual product may differ from image
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%
£830.90 £923.22
Streptozocin 1 g
Actual product may differ from image
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%
£134.87 £149.86
Strychnospermine 1 mg
Actual product may differ from image
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%
£175.82 £195.35
Strychnospermine 5 mg
Actual product may differ from image
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%
£614.63 £682.92
Sugammadex Sodium 1 g
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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%
£1,276.45 £1,418.28
Sugammadex Sodium 100 mg
Actual product may differ from image
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%
£190.75 £211.94
Sugammadex Sodium 250 mg
Actual product may differ from image
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%
£466.75 £518.61
Sulbactam 10 mg
Actual product may differ from image
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%
£71.77 £79.74
Sulbactam 50 mg
Actual product may differ from image
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%
£315.02 £350.02
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