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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: 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%
£280.82 £312.02
Manufacturer: TOKU-E Item Number: L004-2.5MG
Leptomycin B 2.5 mg CAS number 87081-35-4 and purity >99% by HPLC...
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£978.77 £1,087.53
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%
£237.95 £264.39
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%
£830.42 £922.68
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%
£250.47 £278.30
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%
£873.29 £970.32
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%
£305.87 £339.85
Manufacturer: TOKU-E Item Number: L029-25MG
Leucomycin 25 mg CAS number 1392-21-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£88.63 £98.48
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%
£269.74 £299.71
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%
£940.24 £1,044.71
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%
£269.74 £299.71
Manufacturer: TOKU-E Item Number: L032-5MG
Leucomycin A13 5 mg CAS number 78897-52-6 and purity >99% by HPLC...
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£940.24 £1,044.71
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%
£269.74 £299.71
Manufacturer: TOKU-E Item Number: L033-5MG
Leucomycin A4 5 mg CAS number 18361-46-1 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£940.24 £1,044.71
Manufacturer: TOKU-E Item Number: L034-1MG
Leucomycin A5 1 mg CAS number 18361-45-0 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£237.95 £264.39
Manufacturer: TOKU-E Item Number: L034-5MG
Leucomycin A5 5 mg CAS number 18361-45-0 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£830.42 £922.68
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%
£108.86 £120.96
Manufacturer: TOKU-E Item Number: L049-50MG
Levodropropizine 50 mg CAS number 99291-25-5 and purity ≤99.4% (anhydrous basis)...
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£83.33 £92.59
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%
£42.39 £47.10
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%
£321.28 £356.98
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%
£39.50 £43.89
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%
£91.52 £101.69
Manufacturer: TOKU-E Item Number: L045-1G
Lignosulfonic acid sodium salt 1 g CAS number 8061-51-6 and purity not reported...
Price excludes taxes and shipping charges. Save -10%
£51.54 £57.27
Manufacturer: TOKU-E Item Number: L045-5G
Lignosulfonic acid sodium salt 5 g CAS number 8061-51-6 and purity not reported...
Price excludes taxes and shipping charges. Save -10%
£199.90 £222.11
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%
£165.22 £183.57
Manufacturer: TOKU-E Item Number: L050-5MG
Limonin 5 mg CAS number 1180-71-8 and purity >95% by HPLC...
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£574.16 £637.96
Manufacturer: TOKU-E Item Number: L014-25MG
Lincomycin 25 mg CAS number 154-21-2 and purity >99% by HPLC...
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£429.18 £476.86
Manufacturer: TOKU-E Item Number: L014-5MG
Lincomycin 5 mg CAS number 154-21-2 and purity >99% by HPLC...
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£123.79 £137.55
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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£74.18 £82.42
Manufacturer: TOKU-E Item Number: L016-5G
Lincomycin HCl EP 5 g CAS number 7179-49-9 (monohydrate); 859-18-7 (Dried) and purity ≥ 790 pg/mg...
Price excludes taxes and shipping charges. Save -10%
£311.17 £345.74
Manufacturer: TOKU-E Item Number: L002-1G
Lincomycin Hydrochloride USP 1 g CAS number 7179-49-9 (monohydrate); 859-18-7 (Dried) and purity ≥ 790 µg/mg...
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£72.25 £80.28
Manufacturer: TOKU-E Item Number: L002-5G
Lincomycin Hydrochloride USP 5 g CAS number 7179-49-9 (monohydrate); 859-18-7 (Dried) and purity ≥ 790 µg/mg...
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£321.28 £356.98
Manufacturer: TOKU-E Item Number: L057-0.5MG
Linearmycin A 0.5 mg CAS number 163596-98-3 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£195.08 £216.76
Manufacturer: TOKU-E Item Number: L057-2.5MG
Linearmycin A 2.5 mg CAS number 163596-98-3 and purity >95% by HPLC...
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£680.61 £756.24
Manufacturer: TOKU-E Item Number: L007-10MG
Linezolid 10 mg CAS number 165800-03-3 and purity ≥ 98% (On Dried Basis)...
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£102.60 £114.00
Manufacturer: TOKU-E Item Number: L007-100MG
Linezolid 100 mg CAS number 165800-03-3 and purity ≥ 98% (On Dried Basis)...
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£187.37 £208.19
Manufacturer: TOKU-E Item Number: L062-25G
Lithium Dodecyl Sulfate, Dust-FreeTM 25 g CAS number 2044-56-6 and purity >=99.5%...
Price excludes taxes and shipping charges. Save -10%
£112.71 £125.24
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Manufacturer: TOKU-E Item Number: L062-5G
Lithium Dodecyl Sulfate, Dust-FreeTM 5 g CAS number 2044-56-6 and purity >=99.5%...
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£37.57 £41.75
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Manufacturer: TOKU-E Item Number: L062-50G
Lithium Dodecyl Sulfate, Dust-FreeTM 50 g CAS number 2044-56-6 and purity >=99.5%...
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£225.43 £250.47
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Manufacturer: TOKU-E Item Number: L038-1MG
LL Z1640-2 1 mg CAS number 253863-19-3 and purity >99% by HPLC...
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£120.90 £134.34
Manufacturer: TOKU-E Item Number: L038-5MG
LL Z1640-2 5 mg CAS number 253863-19-3 and purity >99% by HPLC...
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£419.54 £466.16
Manufacturer: TOKU-E Item Number: L039-1MG
LL Z1640-4 1 mg CAS number 66018-41-5 and purity >99% by HPLC...
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£190.75 £211.94
Manufacturer: TOKU-E Item Number: L039-5MG
LL Z1640-4 5 mg CAS number 66018-41-5 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£665.68 £739.65
Manufacturer: TOKU-E Item Number: L046-1MG
LL-37 (human) trifluoroacetate salt 1 mg CAS number 597562-32-8 and purity ≥ 98.0%...
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£189.78 £210.87
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Manufacturer: TOKU-E Item Number: L005-1G
Lomefloxacin hydrochloride 1 g CAS number 98079-52-8 and purity ≥ 98.5%...
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£60.69 £67.44
Manufacturer: TOKU-E Item Number: L005-5G
Lomefloxacin hydrochloride 5 g CAS number 98079-52-8 and purity ≥ 98.5%...
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£166.18 £184.64
Manufacturer: TOKU-E Item Number: L013-100MG
Lovastatin (Mevinolin) 100 mg CAS number 75330-75-5 and purity 98.5-101.0%...
Price excludes taxes and shipping charges. Save -10%
£389.68 £432.98
Manufacturer: TOKU-E Item Number: L013-25MG
Lovastatin (Mevinolin) 25 mg CAS number 75330-75-5 and purity 98.5-101.0%...
Price excludes taxes and shipping charges. Save -10%
£96.34 £107.04
Manufacturer: TOKU-E Item Number: L064-1G
Luliconazole 1 g CAS number 187164-19-8 and purity 98.5% ~ 102.0% (on dried basis)...
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£257.22 £285.80
Manufacturer: TOKU-E Item Number: L064-5G
Luliconazole 5 g CAS number 187164-19-8 and purity 98.5% ~ 102.0% (on dried basis)...
Price excludes taxes and shipping charges. Save -10%
£991.78 £1,101.98
Manufacturer: TOKU-E Item Number: L059-1MG
Lupanine 1 mg CAS number 550-90-3 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£217.24 £241.38
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