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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: K006-500MG
Ketoconazole 500 mg CAS number 65277-42-1 and purity (On Dried Basis): 98.0-102.0%...
Price excludes taxes and shipping charges. Save -10%
£302.98 £336.64
Manufacturer: TOKU-E Item Number: K020-1MG
Kibdelone A 1 mg CAS number 934464-77-4 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£287.56 £319.51
Manufacturer: TOKU-E Item Number: K020-5MG
Kibdelone A 5 mg CAS number 934464-77-4 and purity >95% by HPLC...
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£1,001.41 £1,112.68
Manufacturer: TOKU-E Item Number: K021-0.5MG
Kibdelone B 0.5 mg CAS number 934464-78-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£287.56 £319.51
Manufacturer: TOKU-E Item Number: K021-2.5MG
Kibdelone B 2.5 mg CAS number 934464-78-5 and purity >95% by HPLC...
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£1,001.41 £1,112.68
Manufacturer: TOKU-E Item Number: K022-1MG
Kibdelone C 1 mg CAS number 934464-79-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£287.56 £319.51
Manufacturer: TOKU-E Item Number: K022-5MG
Kibdelone C 5 mg CAS number 934464-79-6 and purity >95% by HPLC...
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£1,001.41 £1,112.68
Manufacturer: TOKU-E Item Number: K023-0.5MG
Kigamicin C 0.5 mg CAS number 680571-51-1 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£280.82 £312.02
Manufacturer: TOKU-E Item Number: K023-2.5MG
Kigamicin C 2.5 mg CAS number 680571-51-1 and purity >98% by HPLC...
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£978.77 £1,087.53
Manufacturer: TOKU-E Item Number: K024-0.5MG
Kijanimicin 0.5 mg CAS number 78798-08-0 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£280.82 £312.02
Manufacturer: TOKU-E Item Number: K024-2.5MG
Kijanimicin 2.5 mg CAS number 78798-08-0 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£978.77 £1,087.53
Manufacturer: TOKU-E Item Number: K015-1MG
Kinetin 1 mg CAS number 525-79-1 and purity >98% by HPLC...
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£48.65 £54.06
Manufacturer: TOKU-E Item Number: K015-5MG
Kinetin 5 mg CAS number 525-79-1 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£166.66 £185.18
Manufacturer: TOKU-E Item Number: K032-25MG
Kynurenic acid 25 mg CAS number 492-27-3 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£289.49 £321.66
Manufacturer: TOKU-E Item Number: K032-5MG
Kynurenic acid 5 mg CAS number 492-27-3 and purity >99% by HPLC...
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£83.33 £92.59
Manufacturer: TOKU-E Item Number: L021-0.5MG
L-156602 0.5 mg CAS number 125528-51-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£237.95 £264.39
Manufacturer: TOKU-E Item Number: L021-2.5MG
L-156602 2.5 mg CAS number 125528-51-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£830.42 £922.68
Manufacturer: TOKU-E Item Number: L022-0.5MG
L-681217 0.5 mg CAS number 93522-10-2 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£318.39 £353.77
Manufacturer: TOKU-E Item Number: L022-2.5MG
L-681217 2.5 mg CAS number 93522-10-2 and purity >95% by HPLC...
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£1,111.72 £1,235.24
Manufacturer: TOKU-E Item Number: A018-1G
L-Alanyl-L-Glutamine 1 g CAS number 39537-23-0 and purity >98.5%...
Price excludes taxes and shipping charges. Save -10%
£44.31 £49.24
Manufacturer: TOKU-E Item Number: A018-5G
L-Alanyl-L-Glutamine 5 g CAS number 39537-23-0 and purity >98.5%...
Price excludes taxes and shipping charges. Save -10%
£88.63 £98.48
Manufacturer: TOKU-E Item Number: P112-1G
L-Penicillamine 1 g CAS number 1113-41-3 and purity >85.0%...
Price excludes taxes and shipping charges. Save -10%
£69.36 £77.07
Manufacturer: TOKU-E Item Number: P112-5G
L-Penicillamine 5 g CAS number 1113-41-3 and purity >85.0%...
Price excludes taxes and shipping charges. Save -10%
£171.48 £190.53
Manufacturer: TOKU-E Item Number: L023-0.5MG
Lachnone A 0.5 mg CAS number 903892-99-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£237.95 £264.39
Manufacturer: TOKU-E Item Number: L023-2.5MG
Lachnone A 2.5 mg CAS number 903892-99-9 and purity >95% by HPLC...
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£830.42 £922.68
Manufacturer: TOKU-E Item Number: L017-25G
Lactobionic acid 25 g CAS number 96-82-2 and purity (On Dried Basis): 98.0-102.0%...
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£93.45 £103.83
Manufacturer: TOKU-E Item Number: L043-1MG
Lactoferricin B fragment 4-14 trifluoroacetate salt 1 mg CAS number nan and purity nan...
Price excludes taxes and shipping charges. Save -10%
£227.35 £252.61
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Manufacturer: TOKU-E Item Number: L024-1MG
Lagosin 1 mg CAS number 6834-98-6 and purity >95% by HPLC...
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£269.74 £299.71
Manufacturer: TOKU-E Item Number: L024-5MG
Lagosin 5 mg CAS number 6834-98-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£940.24 £1,044.71
Manufacturer: TOKU-E Item Number: L019-10MG
Lamivudine 10 mg CAS number 134678-17-4 and purity 98.0 - 102.0%...
Price excludes taxes and shipping charges. Save -10%
£86.70 £96.34
Manufacturer: TOKU-E Item Number: L019-50MG
Lamivudine 50 mg CAS number 134678-17-4 and purity 98.0 - 102.0%...
Price excludes taxes and shipping charges. Save -10%
£337.66 £375.18
Manufacturer: TOKU-E Item Number: L025-25MG
Lasalocid 25 mg CAS number 25999-31-9 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£438.81 £487.57
Manufacturer: TOKU-E Item Number: L025-5MG
Lasalocid 5 mg CAS number 25999-31-9 and purity >98% by HPLC...
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£126.20 £140.22
Manufacturer: TOKU-E Item Number: L026-250MG
Lasalocid Sodium 250 mg CAS number 25999-20-6 and purity >95% by HPLC...
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£326.58 £362.87
Manufacturer: TOKU-E Item Number: L026-50MG
Lasalocid Sodium 50 mg CAS number 25999-20-6 and purity >95% by HPLC...
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£111.75 £124.17
Manufacturer: TOKU-E Item Number: L027-25MG
Lateropyrone 25 mg CAS number 93752-78-4 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£545.74 £606.38
Manufacturer: TOKU-E Item Number: L027-5MG
Lateropyrone 5 mg CAS number 93752-78-4 and purity >99% by HPLC...
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£157.03 £174.48
Manufacturer: TOKU-E Item Number: L063-1MG
Lecanoric Acid 1 mg CAS number 480-56-8 and purity >95% by HPLC...
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£190.75 £211.94
Manufacturer: TOKU-E Item Number: L063-5MG
Lecanoric Acid 5 mg CAS number 480-56-8 and purity >95% by HPLC...
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£665.68 £739.65
Manufacturer: TOKU-E Item Number: L060-10MG
Lefamulin Acetate 10 mg CAS number 1350636-82-6 and purity 98.0% ~ 102.0% (on dried basis)...
Price excludes taxes and shipping charges. Save -10%
£302.01 £335.57
Manufacturer: TOKU-E Item Number: L060-100MG
Lefamulin Acetate 100 mg CAS number 1350636-82-6 and purity 98.0% ~ 102.0% (on dried basis)...
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£1,150.25 £1,278.06
Manufacturer: TOKU-E Item Number: L044-100MG
Lenalidomide 100 mg CAS number 191732-72-6 and purity ≥ 99.0%...
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£199.90 £222.11
Manufacturer: TOKU-E Item Number: L044-25MG
Lenalidomide 25 mg CAS number 191732-72-6 and purity ≥ 99.0%...
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£64.55 £71.72
Manufacturer: TOKU-E Item Number: L051-10MG
Lenvatinib 10 mg CAS number 417716-92-8 and purity ≥99% (by HPLC)...
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£65.51 £72.79
Manufacturer: TOKU-E Item Number: L051-50MG
Lenvatinib 50 mg CAS number 417716-92-8 and purity ≥99% (by HPLC)...
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£279.37 £310.42
Manufacturer: TOKU-E Item Number: L054-1MG
Leoidin 1 mg CAS number 105350-54-7 and purity >95% by HPLC...
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£165.22 £183.57
Manufacturer: TOKU-E Item Number: L054-5MG
Leoidin 5 mg CAS number 105350-54-7 and purity >95% by HPLC...
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£574.16 £637.96
Manufacturer: TOKU-E Item Number: L053-0.5MG
Lepimectin A4 0.5 mg CAS number 171249-05-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£185.45 £206.05
Manufacturer: TOKU-E Item Number: L053-2.5MG
Lepimectin A4 2.5 mg CAS number 171249-05-1 and purity >95% by HPLC...
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£646.90 £718.77
Manufacturer: TOKU-E Item Number: L020-0.1MG
Leptomycin A 0.1 mg CAS number 87081-36-5 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£376.67 £418.53
Manufacturer: TOKU-E Item Number: L020-0.5MG
Leptomycin A 0.5 mg CAS number 87081-36-5 and purity >99% by HPLC...
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£1,314.99 £1,461.10
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