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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: L019-10MG
Lamivudine 10 mg CAS number 134678-17-4 and purity 98.0 - 102.0%...
Price excludes taxes and shipping charges. Save -10%
£83.81 £93.12
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%
£327.55 £363.94
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%
£425.81 £473.12
Manufacturer: TOKU-E Item Number: L025-5MG
Lasalocid 5 mg CAS number 25999-31-9 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£122.35 £135.94
Manufacturer: TOKU-E Item Number: L026-250MG
Lasalocid Sodium 250 mg CAS number 25999-20-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£316.94 £352.16
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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£108.38 £120.42
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%
£529.85 £588.72
Manufacturer: TOKU-E Item Number: L027-5MG
Lateropyrone 5 mg CAS number 93752-78-4 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£152.21 £169.12
Manufacturer: TOKU-E Item Number: L063-1MG
Lecanoric Acid 1 mg CAS number 480-56-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£184.97 £205.52
Manufacturer: TOKU-E Item Number: L063-5MG
Lecanoric Acid 5 mg CAS number 480-56-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£645.93 £717.70
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%
£292.86 £325.40
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)...
Price excludes taxes and shipping charges. Save -10%
£1,116.53 £1,240.59
Manufacturer: TOKU-E Item Number: L044-100MG
Lenalidomide 100 mg CAS number 191732-72-6 and purity ≥ 99.0%...
Price excludes taxes and shipping charges. Save -10%
£193.64 £215.15
Manufacturer: TOKU-E Item Number: L044-25MG
Lenalidomide 25 mg CAS number 191732-72-6 and purity ≥ 99.0%...
Price excludes taxes and shipping charges. Save -10%
£62.62 £69.58
Manufacturer: TOKU-E Item Number: L051-10MG
Lenvatinib 10 mg CAS number 417716-92-8 and purity ≥99% (by HPLC)...
Price excludes taxes and shipping charges. Save -10%
£63.59 £70.65
Manufacturer: TOKU-E Item Number: L051-50MG
Lenvatinib 50 mg CAS number 417716-92-8 and purity ≥99% (by HPLC)...
Price excludes taxes and shipping charges. Save -10%
£271.19 £301.32
Manufacturer: TOKU-E Item Number: L054-1MG
Leoidin 1 mg CAS number 105350-54-7 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£160.40 £178.22
Manufacturer: TOKU-E Item Number: L054-5MG
Leoidin 5 mg CAS number 105350-54-7 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£557.31 £619.23
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%
£179.67 £199.63
Manufacturer: TOKU-E Item Number: L053-2.5MG
Lepimectin A4 2.5 mg CAS number 171249-05-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£627.63 £697.37
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%
£365.60 £406.22
Manufacturer: TOKU-E Item Number: L020-0.5MG
Leptomycin A 0.5 mg CAS number 87081-36-5 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£1,276.45 £1,418.28
Manufacturer: TOKU-E Item Number: L004-0.5MG
Leptomycin B 0.5 mg CAS number 87081-35-4 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£272.63 £302.92
Manufacturer: TOKU-E Item Number: L004-2.5MG
Leptomycin B 2.5 mg CAS number 87081-35-4 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£949.87 £1,055.41
Manufacturer: TOKU-E Item Number: L028-0.5MG
Leucanicidin 0.5 mg CAS number 91021-66-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£230.72 £256.36
Manufacturer: TOKU-E Item Number: L028-2.5MG
Leucanicidin 2.5 mg CAS number 91021-66-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£805.85 £895.39
Manufacturer: TOKU-E Item Number: L030-0.5MG
Leucinostatin A 0.5 mg CAS number 76600-38-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£242.77 £269.74
Manufacturer: TOKU-E Item Number: L030-2.5MG
Leucinostatin A 2.5 mg CAS number 76600-38-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£847.76 £941.95
Manufacturer: TOKU-E Item Number: L029-100MG
Leucomycin 100 mg CAS number 1392-21-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£296.71 £329.68
Manufacturer: TOKU-E Item Number: L029-25MG
Leucomycin 25 mg CAS number 1392-21-8 and purity >95% by HPLC...
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£85.74 £95.27
Manufacturer: TOKU-E Item Number: L031-1MG
Leucomycin A1 1 mg CAS number 16846-34-7 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£261.55 £290.61
Manufacturer: TOKU-E Item Number: L031-5MG
Leucomycin A1 5 mg CAS number 16846-34-7 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£912.78 £1,014.20
Manufacturer: TOKU-E Item Number: L032-1MG
Leucomycin A13 1 mg CAS number 78897-52-6 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£261.55 £290.61
Manufacturer: TOKU-E Item Number: L032-5MG
Leucomycin A13 5 mg CAS number 78897-52-6 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£912.78 £1,014.20
Manufacturer: TOKU-E Item Number: L033-1MG
Leucomycin A4 1 mg CAS number 18361-46-1 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£261.55 £290.61
Manufacturer: TOKU-E Item Number: L033-5MG
Leucomycin A4 5 mg CAS number 18361-46-1 and purity >99% by HPLC...
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£912.78 £1,014.20
Manufacturer: TOKU-E Item Number: L034-1MG
Leucomycin A5 1 mg CAS number 18361-45-0 and purity >98% by HPLC...
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£230.72 £256.36
Manufacturer: TOKU-E Item Number: L034-5MG
Leucomycin A5 5 mg CAS number 18361-45-0 and purity >98% by HPLC...
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£805.85 £895.39
Manufacturer: TOKU-E Item Number: L049-100MG
Levodropropizine 100 mg CAS number 99291-25-5 and purity ≤99.4% (anhydrous basis)...
Price excludes taxes and shipping charges. Save -10%
£105.49 £117.21
Manufacturer: TOKU-E Item Number: L049-50MG
Levodropropizine 50 mg CAS number 99291-25-5 and purity ≤99.4% (anhydrous basis)...
Price excludes taxes and shipping charges. Save -10%
£80.44 £89.38
Manufacturer: TOKU-E Item Number: L001-1G
Levofloxacin 1 g CAS number 138199-71-0 and purity ≥ 98.5%...
Price excludes taxes and shipping charges. Save -10%
£40.94 £45.49
Manufacturer: TOKU-E Item Number: L001-5G
Levofloxacin 5 g CAS number 138199-71-0 and purity ≥ 98.5%...
Price excludes taxes and shipping charges. Save -10%
£311.64 £346.27
Manufacturer: TOKU-E Item Number: L048-1G
Levofloxacin HCl 1 g CAS number 177325-13-2 and purity (On Dried Basis): ≥ 89.5%...
Price excludes taxes and shipping charges. Save -10%
£38.05 £42.28
Manufacturer: TOKU-E Item Number: L048-5G
Levofloxacin HCl 5 g CAS number 177325-13-2 and purity (On Dried Basis): ≥ 89.5%...
Price excludes taxes and shipping charges. Save -10%
£88.63 £98.48
Manufacturer: TOKU-E Item Number: L045-1G
Lignosulfonic acid sodium salt 1 g CAS number 8061-51-6 and purity not reported...
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£49.62 £55.13
Manufacturer: TOKU-E Item Number: L045-5G
Lignosulfonic acid sodium salt 5 g CAS number 8061-51-6 and purity not reported...
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£193.64 £215.15
Manufacturer: TOKU-E Item Number: L050-1MG
Limonin 1 mg CAS number 1180-71-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£160.40 £178.22
Manufacturer: TOKU-E Item Number: L050-5MG
Limonin 5 mg CAS number 1180-71-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£557.31 £619.23
Manufacturer: TOKU-E Item Number: L014-25MG
Lincomycin 25 mg CAS number 154-21-2 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£416.66 £462.95
Manufacturer: TOKU-E Item Number: L014-5MG
Lincomycin 5 mg CAS number 154-21-2 and purity >99% by HPLC...
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£119.93 £133.26
Manufacturer: TOKU-E Item Number: L016-1G
Lincomycin HCl EP 1 g CAS number 7179-49-9 (monohydrate); 859-18-7 (Dried) and purity ≥ 790 pg/mg...
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£71.77 £79.74
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