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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: I008-1G
Ivermectin 1 g CAS number 70288-86-7 and purity (On Dried Basis): 95.0-102.2%...
Price excludes taxes and shipping charges. Save -10%
£87.67 £97.41
Manufacturer: TOKU-E Item Number: I008-250MG
Ivermectin 250 mg CAS number 70288-86-7 and purity (On Dried Basis): 95.0-102.2%...
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£34.20 £38.00
Manufacturer: TOKU-E Item Number: I025-25MG
Ivermectin B1a 25 mg CAS number 71827-03-7 and purity >95% by HPLC...
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£604.03 £671.14
Manufacturer: TOKU-E Item Number: I025-5MG
Ivermectin B1a 5 mg CAS number 71827-03-7 and purity >95% by HPLC...
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£173.40 £192.67
Manufacturer: TOKU-E Item Number: I026-1MG
Ivermectin B1a aglycone 1 mg CAS number 123997-59-1 and purity >99% by HPLC...
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£280.82 £312.02
Manufacturer: TOKU-E Item Number: I026-5MG
Ivermectin B1a aglycone 5 mg CAS number 123997-59-1 and purity >99% by HPLC...
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£978.77 £1,087.53
Manufacturer: TOKU-E Item Number: I027-1MG
Ivermectin B1a monosaccharide 1 mg CAS number 123997-64-8 and purity >99% by HPLC...
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£280.82 £312.02
Manufacturer: TOKU-E Item Number: I027-5MG
Ivermectin B1a monosaccharide 5 mg CAS number 123997-64-8 and purity >99% by HPLC...
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£978.77 £1,087.53
Manufacturer: TOKU-E Item Number: I030-10MG
Ixazomib Citrate 10 mg CAS number 1239908-20-3 and purity ≥ 98.0% (HPLC)...
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£187.37 £208.19
Manufacturer: TOKU-E Item Number: O009-100MG
α-apo-oxytetracycline EvoPure® 100 mg CAS number 18695-01-7 and purity >97% by HPLC...
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£320.32 £355.91
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Manufacturer: TOKU-E Item Number: M076-10MG
α-Mangostin 10 mg CAS number 6147-11-1 and purity ≥98.0% (HPLC)...
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£177.26 £196.95
Manufacturer: TOKU-E Item Number: M076-50MG
α-Mangostin 50 mg CAS number 6147-11-1 and purity ≥98.0% (HPLC)...
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£660.38 £733.76
Manufacturer: TOKU-E Item Number: N024-100G
α-Naphthaleneacetic acid (1-NAA) 100 g CAS number 86-87-3 and purity ≥98%...
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£61.66 £68.51
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Manufacturer: TOKU-E Item Number: N024-25G
α-Naphthaleneacetic acid (1-NAA) 25 g CAS number 86-87-3 and purity ≥98%...
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£28.90 £32.11
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Manufacturer: TOKU-E Item Number: O042-100MG
β-Apo-oxytetracycline EvoPure® 100 mg CAS number 18751-99-0 and purity >90% by HPLC...
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£340.55 £378.39
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Manufacturer: TOKU-E Item Number: M077-10MG
γ-Mangostin 10 mg CAS number 31271-07-5 and purity ≥98.0% (HPLC)...
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£377.64 £419.60
Manufacturer: TOKU-E Item Number: M077-50MG
γ-Mangostin 50 mg CAS number 31271-07-5 and purity ≥98.0% (HPLC)...
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£1,254.29 £1,393.66
Manufacturer: TOKU-E Item Number: J002-0.5MG
Janthitrem A 0.5 mg CAS number 73561-89-4 and purity >95% by HPLC...
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£185.45 £206.05
Manufacturer: TOKU-E Item Number: J002-2.5mg
Janthitrem A 2.5 mg CAS number 73561-89-4 and purity >95% by HPLC...
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£646.90 £718.77
Manufacturer: TOKU-E Item Number: J001-100MG
Josamycin 100mg CAS number 16846-24-5 and purity ≥95% ...
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£86.70 £96.34
Manufacturer: TOKU-E Item Number: J001-500MG
Josamycin 500mg CAS number 16846-24-5 and purity ≥95% ...
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£332.84 £369.82
Manufacturer: TOKU-E Item Number: K016-0.5MG
K252A 0.5 mg CAS number 99570-78-2 and purity >98% by HPLC...
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£189.78 £210.87
Manufacturer: TOKU-E Item Number: K016-2.5MG
K252A 2.5 mg CAS number 99570-78-2 and purity >98% by HPLC...
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£662.31 £735.90
Manufacturer: TOKU-E Item Number: K013-100MG
Kanamycin A Sulfate EvoPure® 100 mg CAS number 25389-94-0 and purity >99% by HPLC...
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£272.15 £302.39
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Manufacturer: TOKU-E Item Number: K004-25G
Kanamycin Acid Sulfate BP 25 g CAS number 64013-70-3 and purity ≥ 670 lU/mg...
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£296.71 £329.68
Manufacturer: TOKU-E Item Number: K004-5G
Kanamycin Acid Sulfate BP 5 g CAS number 64013-70-3 and purity ≥ 670 lU/mg...
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£70.33 £78.14
Manufacturer: TOKU-E Item Number: K012-25G
Kanamycin Acid Sulfate for BioProcessing 25 g CAS number 64013-70-3 and purity ≥ 670 lU/mg...
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£454.22 £504.69
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Manufacturer: TOKU-E Item Number: K012-5G
Kanamycin Acid Sulfate for BioProcessing 5 g CAS number 64013-70-3 and purity ≥ 670 lU/mg...
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£110.79 £123.10
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Manufacturer: TOKU-E Item Number: K035-10x1ML
Kanamycin Acid Sulfate ReadyMade Solution 10 x 1 mL CAS number 64013-70-3 and purity >=670 IU/mg (dried basis)...
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£71.29 £79.21
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Manufacturer: TOKU-E Item Number: K014-100MG
Kanamycin B Sulfate EvoPure® 100 mg CAS number 29701-07-3 and purity >99% by HPLC...
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£86.70 £96.34
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Manufacturer: TOKU-E Item Number: K001-100MG
Kanamycin B, EvoPure® 100 mg CAS number 4696-76-8 and purity >=99.0%...
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£86.70 £96.34
Manufacturer: TOKU-E Item Number: K034-10x1ML
Kanamycin ReadyMadeTM Solution 10 x 1 mL CAS number 25389-94-0; 70560-51-9; 133-92-6 and purity ≥ 750 g/mg...
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£72.25 £80.28
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Manufacturer: TOKU-E Item Number: K036-10x100ML
Kanamycin Sulfate ReadyMadeTM Solution 10 x 100 mL CAS number 25389-94-0 and purity..
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£501.43 £557.14
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Manufacturer: TOKU-E Item Number: K036-100ML
Kanamycin Sulfate ReadyMadeTM Solution 100 mL CAS number 25389-94-0 and purity..
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£62.62 £69.58
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Manufacturer: TOKU-E Item Number: K008-25G
Kanamycin Sulfate USP 25 g CAS number 133-92-6; 25389-94-0 and purity ≥ 750 pg/mg...
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£180.15 £200.16
Manufacturer: TOKU-E Item Number: K008-5G
Kanamycin Sulfate USP 5 g CAS number 133-92-6; 25389-94-0 and purity ≥ 750 pg/mg...
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£69.36 £77.07
Manufacturer: TOKU-E Item Number: K031-0.25MG
Karrikin 2 0.25 mg CAS number 857054-03-6 and purity >99% by HPLC...
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£185.45 £206.05
Manufacturer: TOKU-E Item Number: K031-1MG
Karrikin 2 1 mg CAS number 857054-03-6 and purity >99% by HPLC...
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£646.90 £718.77
Manufacturer: TOKU-E Item Number: K030-0.5MG
Karrikinolide 0.5 mg CAS number 857054-02-5 and purity >99% by HPLC...
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£217.24 £241.38
Manufacturer: TOKU-E Item Number: K030-2.5MG
Karrikinolide 2.5 mg CAS number 857054-02-5 and purity >99% by HPLC...
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£755.76 £839.73
Manufacturer: TOKU-E Item Number: K005-1G
Kasugamycin hydrochloride 1 g CAS number 19408-46-9 and purity ≥ 73.5%...
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£76.11 £84.56
Manufacturer: TOKU-E Item Number: K005-10G
Kasugamycin hydrochloride 10 g CAS number 19408-46-9 and purity ≥ 73.5%...
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£330.43 £367.15
Manufacturer: TOKU-E Item Number: K005-50G
Kasugamycin hydrochloride 50 g CAS number 19408-46-9 and purity ≥ 73.5%...
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£1,122.31 £1,247.02
Manufacturer: TOKU-E Item Number: K018-0.1MG
Kazusamycin A 0.1 mg CAS number 92090-94-3 and purity >95% by HPLC...
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£368.97 £409.96
Manufacturer: TOKU-E Item Number: K018-0.5MG
Kazusamycin A 0.5 mg CAS number 92090-94-3 and purity >95% by HPLC...
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£1,286.09 £1,428.98
Manufacturer: TOKU-E Item Number: K019-0.1MG
Kazusamycin B 0.1 mg CAS number 107140-30-7 and purity >95% by HPLC...
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£368.97 £409.96
Manufacturer: TOKU-E Item Number: K019-0.5MG
Kazusamycin B 0.5 mg CAS number 107140-30-7 and purity >95% by HPLC...
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£1,286.09 £1,428.98
Manufacturer: TOKU-E Item Number: K017-0.5MG
Kendomycin 0.5 mg CAS number 183202-73-5 and purity >95% by HPLC...
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£251.44 £279.37
Manufacturer: TOKU-E Item Number: K017-2.5MG
Kendomycin 2.5 mg CAS number 183202-73-5 and purity >95% by HPLC...
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£875.21 £972.46
Manufacturer: TOKU-E Item Number: K006-1G
Ketoconazole 1 g CAS number 65277-42-1 and purity (On Dried Basis): 98.0-102.0%...
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£589.09 £654.55
Manufacturer: TOKU-E Item Number: K006-100MG
Ketoconazole 100 mg CAS number 65277-42-1 and purity (On Dried Basis): 98.0-102.0%...
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£137.76 £153.07
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