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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: O015-5MG
Ochratoxin B 5 mg CAS number 4825-86-9 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£665.68 £739.65
Brand: TOKU-E Item Number: O016-1MG
Ochratoxin C 1 mg CAS number 4865-85-4 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£269.74 £299.71
Brand: TOKU-E Item Number: O016-5MG
Ochratoxin C 5 mg CAS number 4865-85-4 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£940.24 £1,044.71
Brand: TOKU-E Item Number: O036-25MG
Octadecanoyl-L-homoserine lactone 25 mg CAS number 479050-96-9 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£214.83 £238.70
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Brand: TOKU-E Item Number: O036-5MG
Octadecanoyl-L-homoserine lactone 5 mg CAS number 479050-96-9 and purity >99% by HPLC...
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£62.14 £69.04
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Brand: TOKU-E Item Number: O035-25MG
Octanoyl-L-homoserine lactone 25 mg CAS number 147852-84-4 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£214.83 £238.70
Brand: TOKU-E Item Number: O035-5MG
Octanoyl-L-homoserine lactone 5 mg CAS number 147852-84-4 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£62.14 £69.04
Brand: TOKU-E Item Number: O001-10G
Ofloxacin 10g CAS number 82419-36-1 and purity (On Dried Basis): 98.5-101.5%...
Price excludes taxes and shipping charges. Save -10%
£210.98 £234.42
Brand: TOKU-E Item Number: O001-1G
Ofloxacin 1g CAS number 82419-36-1 and purity (On Dried Basis): 98.5-101.5%...
Price excludes taxes and shipping charges. Save -10%
£49.13 £54.59
Brand: TOKU-E Item Number: O039-1G
Ofloxacin Hydrochloride 1 g CAS number 118120-51-7 and purity ≥98% (HPLC)...
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£45.28 £50.31
Brand: TOKU-E Item Number: O039-10G
Ofloxacin Hydrochloride 10 g CAS number 118120-51-7 and purity ≥98% (HPLC)...
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£178.22 £198.02
Brand: TOKU-E Item Number: O017-5MG
Oleandomycin 5 mg CAS number 3922-90-5 and purity >95% by HPLC...
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£519.25 £576.95
Brand: TOKU-E Item Number: O013-25MG
Oligomycin A 25 mg CAS number 579-13-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£454.22 £504.69
Brand: TOKU-E Item Number: O013-5MG
Oligomycin A 5 mg CAS number 579-13-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£130.05 £144.50
Brand: TOKU-E Item Number: O018-25MG
Oligomycin B 25 mg CAS number 11050-94-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£454.22 £504.69
Brand: TOKU-E Item Number: O018-5MG
Oligomycin B 5 mg CAS number 11050-94-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£130.05 £144.50
Brand: TOKU-E Item Number: O019-1MG
Oligomycin C 1 mg CAS number 11052-72-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£280.82 £312.02
Brand: TOKU-E Item Number: O019-5MG
Oligomycin C 5 mg CAS number 11052-72-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£978.77 £1,087.53
Brand: TOKU-E Item Number: O020-0.5MG
Oligomycin D 0.5 mg CAS number 1404-59-7 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£269.74 £299.71
Brand: TOKU-E Item Number: O020-2.5MG
Oligomycin D 2.5 mg CAS number 1404-59-7 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£940.24 £1,044.71
Brand: TOKU-E Item Number: O021-1MG
Oligomycin E 1 mg CAS number 110231-34-0 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£269.74 £299.71
Brand: TOKU-E Item Number: O021-5MG
Oligomycin E 5 mg CAS number 110231-34-0 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£940.24 £1,044.71
Brand: TOKU-E Item Number: O037-10MG
Oligomycins 10 mg CAS number 1404-19-9 and purity >99.0%...
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£164.73 £183.04
Brand: TOKU-E Item Number: O037-100MG
Oligomycins 100 mg CAS number 1404-19-9 and purity >99.0%...
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£1,091.01 £1,212.23
Brand: TOKU-E Item Number: O048-10MG
Omadacycline Tosylate 10 mg CAS number 1075240-43-5 and purity 97.0% - 102.0 % (Anhydrous basis)...
Price excludes taxes and shipping charges. Save -10%
£441.70 £490.78
Brand: TOKU-E Item Number: O011-100MG
Omeprazole 100 mg CAS number 73590-58-6 and purity 98.0-102.0%...
Price excludes taxes and shipping charges. Save -10%
£106.93 £118.81
Brand: TOKU-E Item Number: O011-500MG
Omeprazole 500 mg CAS number 73590-58-6 and purity 98.0-102.0%...
Price excludes taxes and shipping charges. Save -10%
£330.43 £367.15
Brand: TOKU-E Item Number: O046-0.1MG
Oosporein 0.1 mg CAS number 475-54-7 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£165.22 £183.57
Brand: TOKU-E Item Number: O046-0.5MG
Oosporein 0.5 mg CAS number 475-54-7 and purity >99% by HPLC...
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£574.16 £637.96
Brand: TOKU-E Item Number: O012-1MG
OP-145 1 mg CAS number Not Established and purity ≥98%...
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£277.45 £308.28
Brand: TOKU-E Item Number: O012-5MG
OP-145 5 mg CAS number Not Established and purity ≥98%...
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£629.07 £698.97
Brand: TOKU-E Item Number: O022-1MG
Ophiobolin A 1 mg CAS number 4611-05-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£193.15 £214.62
Brand: TOKU-E Item Number: O022-5MG
Ophiobolin A 5 mg CAS number 4611-05-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£671.94 £746.60
Brand: TOKU-E Item Number: O023-1MG
Ophiobolin B 1 mg CAS number 5601-74-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£280.82 £312.02
Brand: TOKU-E Item Number: O023-5MG
Ophiobolin B 5 mg CAS number 5601-74-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£978.77 £1,087.53
Brand: TOKU-E Item Number: O024-1MG
Ophiobolin C 1 mg CAS number 19022-51-6 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£280.82 £312.02
Brand: TOKU-E Item Number: O024-5MG
Ophiobolin C 5 mg CAS number 19022-51-6 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£978.77 £1,087.53
Brand: TOKU-E Item Number: O025-1MG
Orfamide A 1 mg CAS number 939960-34-6 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£269.74 £299.71
Brand: TOKU-E Item Number: O025-5MG
Orfamide A 5 mg CAS number 939960-34-6 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£940.24 £1,044.71
Brand: TOKU-E Item Number: O026-1MG
Orfamide B 1 mg CAS number 939960-35-7 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£269.74 £299.71
Brand: TOKU-E Item Number: O026-5MG
Orfamide B 5 mg CAS number 939960-35-7 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£940.24 £1,044.71
Brand: TOKU-E Item Number: O032-10MG
Oritavancin Diphosphate 10 mg CAS number 192564-14-0 and purity ≥98% (HPLC)...
Price excludes taxes and shipping charges. Save -10%
£149.80 £166.45
Brand: TOKU-E Item Number: O032-50MG
Oritavancin Diphosphate 50mg CAS number 192564-14-0 and purity ≥98% (HPLC)...
Price excludes taxes and shipping charges. Save -10%
£605.47 £672.75
Brand: TOKU-E Item Number: O007-5G
Ornidazole 5g CAS number 16773-42-5 and purity 99.0% ~ 101.0% (dried basis)...
Price excludes taxes and shipping charges. Save -10%
£61.66 £68.51
Brand: TOKU-E Item Number: O050-25MG
Orsellinic Acid 25 mg CAS number 480-64-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£188.82 £209.80
Brand: TOKU-E Item Number: O050-5MG
Orsellinic Acid 5 mg CAS number 480-64-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£54.91 £61.01
Brand: TOKU-E Item Number: O041-1G
Oseltamivir Phosphate 1 g CAS number 204255-11-8 and purity (On Dried Basis): ≥98%-101.5%...
Price excludes taxes and shipping charges. Save -10%
£65.51 £72.79
Brand: TOKU-E Item Number: O041-5G
Oseltamivir Phosphate 5 g CAS number 204255-11-8 and purity (On Dried Basis): ≥98%-101.5%...
Price excludes taxes and shipping charges. Save -10%
£160.88 £178.76
Brand: TOKU-E Item Number: O027-25MG
Ostreogrycin A 25 mg CAS number 21411-53-0 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£978.77 £1,087.53
Brand: TOKU-E Item Number: O027-5MG
Ostreogrycin A 5 mg CAS number 21411-53-0 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£280.82 £312.02
Brand: TOKU-E Item Number: O006-1G
Oxacillin sodium 1 g CAS number 7240-38-2 (monohydrate) and purity (On Dried Basis): 815-950µg/mg...
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£39.50 £43.89
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