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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.

Brand: TOKU-E Item Number: R019-50MG
Ristocetin A Sulfate 50 mg CAS number 11140-99-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£978.77 £1,087.53
Brand: TOKU-E Item Number: R033-0.5MG
RK-682 0.5 mg CAS number 332131-32-5 and purity >95% by HPLC...
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£251.44 £279.37
Brand: TOKU-E Item Number: R033-2.5MG
RK-682 2.5 mg CAS number 332131-32-5 and purity >95% by HPLC...
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£875.21 £972.46
Brand: TOKU-E Item Number: R048-1MG
Roccellic Acid 1 mg CAS number 29838-46-8 and purity >98% by HPLC...
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£154.62 £171.80
Brand: TOKU-E Item Number: R048-5MG
Roccellic Acid 5 mg CAS number 29838-46-8 and purity >98% by HPLC...
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£539.00 £598.89
Brand: TOKU-E Item Number: R045-250MG
Rocuronium Bromide 250mg CAS number 119302-91-9 and purity (On Dried Basis): 99-101%...
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£332.84 £369.82
Brand: TOKU-E Item Number: R045-50MG
Rocuronium Bromide 50mg CAS number 119302-91-9 and purity (On Dried Basis): 99-101%...
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£96.34 £107.04
Brand: TOKU-E Item Number: R023-5MG
Rolitetracycline 5 mg CAS number 751-97-3 and purity >98% by HPLC...
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£630.52 £700.58
Brand: TOKU-E Item Number: R034-0.5MG
Roquefortine C 0.5 mg CAS number 58735-64-1 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£280.82 £312.02
Brand: TOKU-E Item Number: R034-2.5MG
Roquefortine C 2.5 mg CAS number 58735-64-1 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£978.77 £1,087.53
Brand: TOKU-E Item Number: R035-1MG
Roquefortine E 1 mg CAS number 871982-52-4 and purity >95% by HPLC...
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£190.75 £211.94
Brand: TOKU-E Item Number: R035-5MG
Roquefortine E 5 mg CAS number 871982-52-4 and purity >95% by HPLC...
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£665.68 £739.65
Brand: TOKU-E Item Number: R039-1MG
Roseoflavin 1 mg CAS number 51093-55-1 and purity >98% by HPLC...
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£123.79 £137.55
Brand: TOKU-E Item Number: R039-5MG
Roseoflavin 5 mg CAS number 51093-55-1 and purity >98% by HPLC...
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£429.18 £476.86
Brand: TOKU-E Item Number: R005-10G
Roxithromycin 10 g CAS number 80214-83-1 and purity (On Dried Basis): 97.0-101.0%...
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£124.27 £138.08
Brand: TOKU-E Item Number: R005-5G
Roxithromycin 5 g CAS number 80214-83-1 and purity (On Dried Basis): 97.0-101.0%...
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£69.36 £77.07
Brand: TOKU-E Item Number: R049-0.5MG
Rubiginone D2 0.5 mg CAS number 274913-71-2 and purity >98% by HPLC...
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£185.45 £206.05
Brand: TOKU-E Item Number: R049-2.5MG
Rubiginone D2 2.5 mg CAS number 274913-71-2 and purity >98% by HPLC...
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£646.90 £718.77
Brand: TOKU-E Item Number: R042-10MG
Rucaparib 10 mg CAS number 283173-50-2 and purity ≥98% by HPLC...
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£90.56 £100.62
Brand: TOKU-E Item Number: R042-100MG
Rucaparib 100 mg CAS number 283173-50-2 and purity ≥98% by HPLC...
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£315.50 £350.56
Brand: TOKU-E Item Number: R044-10MG
Rucaparib Camsylate 10 mg CAS number 1859053-21-6 and purity ≥98% by HPLC...
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£148.36 £164.84
Brand: TOKU-E Item Number: R044-50MG
Rucaparib Camsylate 50 mg CAS number 1859053-21-6 and purity ≥98% by HPLC...
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£326.58 £362.87
Brand: TOKU-E Item Number: R043-10MG
Rucaparib Phosphate 10 mg CAS number 459868-92-9 and purity ≥98% by HPLC...
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£90.56 £100.62
Brand: TOKU-E Item Number: R043-100MG
Rucaparib Phosphate 100 mg CAS number 459868-92-9 and purity ≥98% by HPLC...
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£315.50 £350.56
Brand: TOKU-E Item Number: R037-1MG
Rugulosin (+) form 1 mg CAS number 23537-16-8 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£251.44 £279.37
Brand: TOKU-E Item Number: R037-5MG
Rugulosin (+) form 5 mg CAS number 23537-16-8 and purity >98% by HPLC...
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£875.21 £972.46
Brand: TOKU-E Item Number: R036-1MG
Rugulosin (-) form 1 mg CAS number 21884-45-7 and purity >98% by HPLC...
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£237.95 £264.39
Brand: TOKU-E Item Number: R036-5MG
Rugulosin (-) form 5 mg CAS number 21884-45-7 and purity >98% by HPLC...
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£830.42 £922.68
Brand: TOKU-E Item Number: R038-1MG
Rugulotrosin A 1 mg CAS number 685135-81-3 and purity >98% by HPLC...
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£237.95 £264.39
Brand: TOKU-E Item Number: R038-5MG
Rugulotrosin A 5 mg CAS number 685135-81-3 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£830.42 £922.68
Brand: TOKU-E Item Number: S073-0.5MG
Saccharocarcin A 0.5 mg CAS number 158475-32-2 and purity >95% by HPLC...
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£275.52 £306.13
Brand: TOKU-E Item Number: S073-2.5MG
Saccharocarcin A 2.5 mg CAS number 158475-32-2 and purity >95% by HPLC...
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£959.02 £1,065.58
Brand: TOKU-E Item Number: S074-0.5MG
Saccharocarcin B 0.5 mg CAS number 158475-33-3 and purity >99% by HPLC...
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£275.52 £306.13
Brand: TOKU-E Item Number: S074-2.5MG
Saccharocarcin B 2.5 mg CAS number 158475-33-3 and purity >99% by HPLC...
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£959.02 £1,065.58
Brand: TOKU-E Item Number: S122-1MG
Salazinic Acid 1 mg CAS number 521-39-1 and purity >98% by HPLC...
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£151.73 £168.59
Brand: TOKU-E Item Number: S122-5MG
Salazinic Acid 5 mg CAS number 521-39-1 and purity >98% by HPLC...
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£527.44 £586.04
Brand: TOKU-E Item Number: S060-100G
Salicin 100 g CAS number 138-52-3 and purity ≥98% by HPLC...
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£415.69 £461.88
Brand: TOKU-E Item Number: S060-25G
Salicin 25 g CAS number 138-52-3 and purity ≥98% by HPLC...
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£146.43 £162.70
Brand: TOKU-E Item Number: S060-5G
Salicin 5 g CAS number 138-52-3 and purity ≥98% by HPLC...
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£37.57 £41.75
Brand: TOKU-E Item Number: S001-25MG
Salinomycin 25 mg CAS number 53003-10-4 and purity ≥90% by HPLC...
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£597.76 £664.18
Brand: TOKU-E Item Number: S001-5MG
Salinomycin 5 mg CAS number 53003-10-4 and purity ≥90% by HPLC...
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£183.52 £203.91
Brand: TOKU-E Item Number: S138-0.5ML
Salinomycin ReadyMadeTM Solution 0.5 mL CAS number 53003-10-4 and purity (HPLC, As Is): ≥ 90.0%...
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£72.25 £80.28
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Brand: TOKU-E Item Number: S138-10x0.5ML
Salinomycin ReadyMadeTM Solution 10 x 0.5 mL CAS number 53003-10-4 and purity (HPLC, As Is): ≥ 90.0%...
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£575.61 £639.56
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Brand: TOKU-E Item Number: S002-1G
Salinomycin sodium 1 g CAS number 55721-31-8 and purity (On Dried Basis): ≥ 900 u/mg...
Price excludes taxes and shipping charges. Save -10%
£263.96 £293.29
Brand: TOKU-E Item Number: S002-100MG
Salinomycin sodium 100 mg CAS number 55721-31-8 and purity (On Dried Basis): ≥ 900 u/mg...
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£162.81 £180.90
Brand: TOKU-E Item Number: S002-50MG
Salinomycin sodium 50 mg CAS number 55721-31-8 and purity (On Dried Basis): ≥ 900 u/mg...
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£97.30 £108.11
Brand: TOKU-E Item Number: S075-10MG
Sancycline 10 mg CAS number 808-26-4 and purity >98% by HPLC...
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£139.69 £155.21
Brand: TOKU-E Item Number: S076-10MG
Sancycline hydrochloride 10 mg CAS number 6625-20-3 and purity >98% by HPLC...
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£133.43 £148.25
Brand: TOKU-E Item Number: S076-50MG
Sancycline hydrochloride 50 mg CAS number 6625-20-3 and purity >98% by HPLC...
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£550.56 £611.73
Brand: TOKU-E Item Number: S077-1MG
Sandramycin 1 mg CAS number 100940-65-6 and purity >95% by HPLC...
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£275.52 £306.13
Brand: TOKU-E Item Number: S077-5MG
Sandramycin 5 mg CAS number 100940-65-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£959.02 £1,065.58
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