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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: N037-0.5MG
Neoaureothin 0.5 mg CAS number 28900-27-8 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£275.52 £306.13
Brand: TOKU-E Item Number: N037-2.5MG
Neoaureothin 2.5 mg CAS number 28900-27-8 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£959.02 £1,065.58
Brand: TOKU-E Item Number: N050-10MG
Neochlorogenic acid 10 mg CAS number 906-33-2 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£190.75 £211.94
Brand: TOKU-E Item Number: N050-50MG
Neochlorogenic acid 50 mg CAS number 906-33-2 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£786.58 £873.98
Brand: TOKU-E Item Number: N026-10MG
Neomycin A Sulfate (Neamine) EvoPure® 10 mg CAS number 3947-65-7 and purity >95% by HPLC...
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£285.64 £317.37
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Brand: TOKU-E Item Number: N019-10MG
Neomycin B Sulfate EvoPure® 10mg CAS number 4146-30-9 and purity >98% by HPLC...
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£285.64 £317.37
Brand: TOKU-E Item Number: N022-10MG
Neomycin C Sulfate EvoPure® 10 mg CAS number 66-86-4 and purity >95% by HPLC...
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£285.64 £317.37
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Brand: TOKU-E Item Number: N027-10x100ML
Neomycin solution (10 mg/mL Neomycin in 0.9% NaCl) 10 x 100 mL CAS number 1405-10-3 and purity not reported...
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£320.32 £355.91
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Brand: TOKU-E Item Number: N027-100ML
Neomycin solution (10 mg/mL Neomycin in 0.9% NaCl) 100 mL CAS number 1405-10-3 and purity not reported...
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£66.95 £74.39
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Brand: TOKU-E Item Number: N012-100G
Neomycin Sulfate EP 100 g CAS number 1405-10-3 and purity (Dry basis): ≥680 IU/mg...
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£100.67 £111.86
Brand: TOKU-E Item Number: N012-25G
Neomycin Sulfate EP 25 g CAS number 1405-10-3 and purity (Dry basis): ≥680 IU/mg...
Price excludes taxes and shipping charges. Save -10%
£57.80 £64.22
Brand: TOKU-E Item Number: N012-500G
Neomycin Sulfate EP 500 g CAS number 1405-10-3 and purity (Dry basis): ≥680 IU/mg...
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£477.83 £530.92
Brand: TOKU-E Item Number: N003-100G
Neomycin Sulfate USP 100 g CAS number 1405-10-3 and purity (Dry basis): ≥680 IU/mg...
Price excludes taxes and shipping charges. Save -10%
£110.79 £123.10
Brand: TOKU-E Item Number: N003-25G
Neomycin Sulfate USP 25 g CAS number 1405-10-3 and purity (Dry basis): ≥680 IU/mg...
Price excludes taxes and shipping charges. Save -10%
£57.80 £64.22
Brand: TOKU-E Item Number: N003-500G
Neomycin Sulfate USP 500 g CAS number 1405-10-3 and purity (Dry basis): ≥680 IU/mg...
Price excludes taxes and shipping charges. Save -10%
£477.83 £530.92
Brand: TOKU-E Item Number: N079-1MG
Neosartoricin 1 mg CAS number 1421941-29-8 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£217.24 £241.38
Brand: TOKU-E Item Number: N079-5MG
Neosartoricin 5 mg CAS number 1421941-29-8 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£755.76 £839.73
Brand: TOKU-E Item Number: N080-1MG
Neosartoricin B 1 mg CAS number 1421708-43-1 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£217.24 £241.38
Brand: TOKU-E Item Number: N080-5MG
Neosartoricin B 5 mg CAS number 1421708-43-1 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£755.76 £839.73
Brand: TOKU-E Item Number: N067-10MG
Neratinib 10mg CAS number 698387-09-6 and purity ≥99% (by HPLC)...
Price excludes taxes and shipping charges. Save -10%
£55.87 £62.08
Brand: TOKU-E Item Number: N067-50MG
Neratinib 50mg CAS number 698387-09-6 and purity ≥99% (by HPLC)...
Price excludes taxes and shipping charges. Save -10%
£107.90 £119.88
Brand: TOKU-E Item Number: N068-100MG
Neratinib Maleate 100mg CAS number 915942-22-2 and purity ≥99% (by HPLC)...
Price excludes taxes and shipping charges. Save -10%
£160.88 £178.76
Brand: TOKU-E Item Number: N068-250MG
Neratinib Maleate 250mg CAS number 915942-22-2 and purity ≥99% (by HPLC)...
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£243.73 £270.81
Brand: TOKU-E Item Number: N004-10MG
Netilmicin sulfate 10 mg CAS number 56391-57-2 and purity (On Dried Basis): ≥595 μg/mg...
Price excludes taxes and shipping charges. Save -10%
£83.33 £92.59
Brand: TOKU-E Item Number: N004-100MG
Netilmicin sulfate 100 mg CAS number 56391-57-2 and purity (On Dried Basis): ≥595 μg/mg...
Price excludes taxes and shipping charges. Save -10%
£427.73 £475.26
Brand: TOKU-E Item Number: N004-50MG
Netilmicin sulfate 50 mg CAS number 56391-57-2 and purity (On Dried Basis): ≥595 μg/mg...
Price excludes taxes and shipping charges. Save -10%
£263.96 £293.29
Brand: TOKU-E Item Number: N049-5G
Nicarbazin 5 g CAS number 330-95-0 and purity ≥98%...
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£86.70 £96.34
Brand: TOKU-E Item Number: N048-10x25G
Niclosamide Dried 10 x 25 g CAS number 50-65-7 and purity 98-101%...
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£406.06 £451.17
Brand: TOKU-E Item Number: N048-2x25G
Niclosamide Dried 2 x 25 g CAS number 50-65-7 and purity 98-101%...
Price excludes taxes and shipping charges. Save -10%
£109.82 £122.03
Brand: TOKU-E Item Number: N051-1G
Niclosamide monohydrate 1 g CAS number 73360-56-2 and purity 98.5-101%...
Price excludes taxes and shipping charges. Save -10%
£326.58 £362.87
Brand: TOKU-E Item Number: N051-100MG
Niclosamide monohydrate 100 mg CAS number 73360-56-2 and purity 98.5-101%...
Price excludes taxes and shipping charges. Save -10%
£44.31 £49.24
Brand: TOKU-E Item Number: N018-100G
Nicotinamide (Vitamin B3) USP 100 g CAS number 98-92-0 and purity 98.5-101.5%...
Price excludes taxes and shipping charges. Save -10%
£27.94 £31.04
Brand: TOKU-E Item Number: N018-500G
Nicotinamide (Vitamin B3) USP 500 g CAS number 98-92-0 and purity 98.5-101.5%...
Price excludes taxes and shipping charges. Save -10%
£125.24 £139.15
Brand: TOKU-E Item Number: N038-1MG
Nidulin 1 mg CAS number 10089-10-8 and purity >99% by HPLC...
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£245.66 £272.95
Brand: TOKU-E Item Number: N038-5MG
Nidulin 5 mg CAS number 10089-10-8 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£857.87 £953.19
Brand: TOKU-E Item Number: N039-25MG
Nigericin 25 mg CAS number 28380-24-7 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£483.13 £536.81
Brand: TOKU-E Item Number: N039-5MG
Nigericin 5 mg CAS number 28380-24-7 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£138.72 £154.14
Brand: TOKU-E Item Number: N015-10MG
Nigericin sodium 10 mg CAS number 28643-80-3 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£203.75 £226.39
Brand: TOKU-E Item Number: N015-50MG
Nigericin sodium 50 mg CAS number 28643-80-3 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£714.81 £794.24
Brand: TOKU-E Item Number: N081-0.25MG
Nikkomycin Z 0.25 mg CAS number 59456-70-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£154.62 £171.80
Brand: TOKU-E Item Number: N081-1MG
Nikkomycin Z 1 mg CAS number 59456-70-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£539.00 £598.89
Brand: TOKU-E Item Number: N065-10MG
Nintedanib 10mg CAS number 656247-17-5 and purity ≥99%...
Price excludes taxes and shipping charges. Save -10%
£354.03 £393.37
Brand: TOKU-E Item Number: N066-100MG
Nintedanib Ethanesulfonate 100mg CAS number 656247-18-6 and purity ≥99% (by HPLC)...
Price excludes taxes and shipping charges. Save -10%
£160.88 £178.76
Brand: TOKU-E Item Number: N013-1G
Nisin 1 g CAS number 1414-45-5 and purity (On Dried Basis): ≥900 IU/mg...
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£60.69 £67.44
Brand: TOKU-E Item Number: N013-25G
Nisin 25 g CAS number 1414-45-5 and purity (On Dried Basis): ≥900 IU/mg...
Price excludes taxes and shipping charges. Save -10%
£553.45 £614.94
Brand: TOKU-E Item Number: N013-5G
Nisin 5 g CAS number 1414-45-5 and purity (On Dried Basis): ≥900 IU/mg...
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£159.92 £177.69
Brand: TOKU-E Item Number: N084-1ML
Nisin ReadyMade Solution 1 mL CAS number 1414-45-5 and purity Potency: 20,000-40,000 IU/ml...
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£106.93 £118.81
Brand: TOKU-E Item Number: N084-5x1ML
Nisin ReadyMade Solution 5 x 1 mL CAS number 1414-45-5 and purity Potency: 20,000-40,000 IU/ml...
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£454.22 £504.69
Brand: TOKU-E Item Number: N055-1G
Nisin Z 1 g CAS number 137061-46-2 and purity (On Dried Basis): 95%...
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£198.45 £220.50
Brand: TOKU-E Item Number: N052-10MG
Nitazoxanide 10 mg CAS number 55981-09-4 and purity ≥99%...
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£65.51 £72.79
Brand: TOKU-E Item Number: N052-50MG
Nitazoxanide 50 mg CAS number 55981-09-4 and purity ≥99%...
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£245.66 £272.95
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