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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: M082-25G
Mebendazole 25 g CAS number 31431-39-7 and purity (On Dried Basis) 99.0% - 101.0%...
Price excludes taxes and shipping charges. Save -10%
£59.72 £66.36
Manufacturer: TOKU-E Item Number: M001-100MG
Mecillinam 100 mg CAS number 32887-01-7 and purity ≥ 90.0%...
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£127.16 £141.29
Manufacturer: TOKU-E Item Number: M049-25MG
Meclocycline 25 mg CAS number nan and purity >98% by HPLC...
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£513.95 £571.06
Manufacturer: TOKU-E Item Number: M049-5MG
Meclocycline 5 mg CAS number nan and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£147.39 £163.77
Manufacturer: TOKU-E Item Number: M043-25MG
Meclocycline sulfosalicylate 25 mg CAS number 73816-42-9 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£303.46 £337.18
Manufacturer: TOKU-E Item Number: M043-5MG
Meclocycline sulfosalicylate 5 mg CAS number 73816-42-9 and purity >98% by HPLC...
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£88.15 £97.94
Manufacturer: TOKU-E Item Number: M050-1MG
Meleagrin 1 mg CAS number 71751-77-4 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£147.39 £163.77
Manufacturer: TOKU-E Item Number: M050-5MG
Meleagrin 5 mg CAS number 71751-77-4 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£513.95 £571.06
Manufacturer: TOKU-E Item Number: M081-10MG
Melittin 10 mg CAS number 20449-79-0 and purity ≥ 98.0%...
Price excludes taxes and shipping charges. Save -10%
£312.61 £347.34
Manufacturer: TOKU-E Item Number: M079-100G
Menadione 100 g CAS number 58-27-5 and purity ≥ 98.5%...
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£112.23 £124.70
Manufacturer: TOKU-E Item Number: M079-25G
Menadione 25 g CAS number 58-27-5 and purity ≥ 98.5%...
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£32.75 £36.39
Manufacturer: TOKU-E Item Number: M080-25G
Menadione sodium bisulfite 25 g CAS number 130-37-0 and purity ≥ 96.0%...
Price excludes taxes and shipping charges. Save -10%
£44.79 £49.77
Manufacturer: TOKU-E Item Number: M080-4x25G
Menadione sodium bisulfite 4 x 25 g CAS number 130-37-0 and purity ≥ 96.0%...
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£119.46 £132.73
Manufacturer: TOKU-E Item Number: M113-0.5MG
Mensacarcin 0.5 mg CAS number 808750-39-2 and purity >95% by HPLC...
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£200.38 £222.64
Manufacturer: TOKU-E Item Number: M113-2.5MG
Mensacarcin 2.5 mg CAS number 808750-39-2 and purity >95% by HPLC...
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£696.02 £773.36
Manufacturer: TOKU-E Item Number: M106-1MG
Mer-NF5003E 1 mg CAS number 159121-98-9 and purity >99% by HPLC...
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£210.49 £233.88
Manufacturer: TOKU-E Item Number: M106-5MG
Mer-NF5003E 5 mg CAS number 159121-98-9 and purity >99% by HPLC...
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£733.60 £815.11
Manufacturer: TOKU-E Item Number: M107-1MG
Mer-NF5003F 1 mg CAS number 149598-70-9 and purity >99% by HPLC...
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£210.49 £233.88
Manufacturer: TOKU-E Item Number: M107-5MG
Mer-NF5003F 5 mg CAS number 149598-70-9 and purity >99% by HPLC...
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£733.60 £815.11
Manufacturer: TOKU-E Item Number: M002-50MG
Meropenem USP 50 mg CAS number 119478-56-7 and purity (On Dried Basis): 98.0 - 101.0%...
Price excludes taxes and shipping charges. Save -10%
£184.01 £204.45
Manufacturer: TOKU-E Item Number: M028-100MG
Meropenem with Sodium Carbonate 100 mg CAS number nan and purity (On Dried Basis Meropenem) ≥ 78.0%...
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£137.28 £152.53
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Manufacturer: TOKU-E Item Number: M087-5G
Metformin hydrochloride 5 g CAS number 1115-70-4 and purity 98.5% - 101.0%...
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£28.90 £32.11
Manufacturer: TOKU-E Item Number: M051-25MG
Methacycline 25 mg CAS number 914-00-1 and purity >98% by HPLC...
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£416.66 £462.95
Manufacturer: TOKU-E Item Number: M051-5MG
Methacycline 5 mg CAS number 914-00-1 and purity >98% by HPLC...
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£119.93 £133.26
Manufacturer: TOKU-E Item Number: M003-1G
Methacycline hydrochloride 1 g CAS number 3963-95-9 and purity >98% by HPLC...
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£163.77 £181.97
Manufacturer: TOKU-E Item Number: M003-100MG
Methacycline hydrochloride 100 mg CAS number 3963-95-9 and purity >98% by HPLC...
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£114.16 £126.84
Manufacturer: TOKU-E Item Number: M029-1G
Methicillin Sodium 1 g CAS number 132-92-3 and purity ≥90.0%...
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£194.60 £216.22
Manufacturer: TOKU-E Item Number: M029-100MG
Methicillin Sodium 100 mg CAS number 132-92-3 and purity ≥90.0%...
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£83.81 £93.12
Manufacturer: TOKU-E Item Number: M027-100MG
Methotrexate 100 mg CAS number 59-05-2 and purity 98.0% -102.0%...
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£92.48 £102.76
Manufacturer: TOKU-E Item Number: M027-500MG
Methotrexate 500 mg CAS number 59-05-2 and purity 98.0% -102.0%...
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£229.28 £254.76
Manufacturer: TOKU-E Item Number: M031-250MG
Methotrexate sodium salt 250 mg CAS number 7413-34-5 and purity (HPLC As Is) ≥ 98.0%...
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£113.19 £125.77
Manufacturer: TOKU-E Item Number: M103-1MG
Methyl betulinate 1 mg CAS number 2259-06-5 and purity >99% by HPLC...
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£120.91 £134.34
Manufacturer: TOKU-E Item Number: M103-5MG
Methyl betulinate 5 mg CAS number 2259-06-5 and purity >99% by HPLC...
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£419.54 £466.16
Manufacturer: TOKU-E Item Number: M108-0.5MG
Methylspinazarin 0.5 mg CAS number 41768-12-1 and purity >99% by HPLC...
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£179.67 £199.63
Manufacturer: TOKU-E Item Number: M108-2.5MG
Methylspinazarin 2.5 mg CAS number 41768-12-1 and purity >99% by HPLC...
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£627.63 £697.37
Manufacturer: TOKU-E Item Number: M011-100G
Metronidazole 100 g CAS number 443-48-1 and purity (On Dried Basis): 99-101%...
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£256.26 £284.73
Manufacturer: TOKU-E Item Number: M011-25G
Metronidazole 25 g CAS number 443-48-1 and purity (On Dried Basis): 99-101%...
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£103.56 £115.07
Manufacturer: TOKU-E Item Number: M011-5G
Metronidazole 5 g CAS number 443-48-1 and purity (On Dried Basis): 99-101%...
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£45.76 £50.84
Manufacturer: TOKU-E Item Number: M097-25G
Metronidazole, Micronized 25 g CAS number 443-48-2 and purity ≥99-101% ...
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£121.38 £134.87
Manufacturer: TOKU-E Item Number: M097-5G
Metronidazole, Micronized 5 g CAS number 443-48-1 and purity ≥99-101% ...
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£83.81 £93.12
Manufacturer: TOKU-E Item Number: M004-10MG
Mevastatin (Compactin) 10 mg CAS number 73573-88-3 and purity ≥95.0%...
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£80.44 £89.38
Manufacturer: TOKU-E Item Number: M017-100MG
Mezlocillin Sodium 100 mg CAS number 59798-30-0 and purity (On Dried Basis): 838-978 µg/mg...
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£236.50 £262.78
Manufacturer: TOKU-E Item Number: M017-500MG
Mezlocillin Sodium 500 mg CAS number 59798-30-0 and purity (On Dried Basis): 838-978 µg/mg...
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£672.90 £747.67
Manufacturer: TOKU-E Item Number: M044-1MG
Micafungin 1 mg CAS number 235114-32-6 and purity >98% by HPLC...
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£261.55 £290.61
Manufacturer: TOKU-E Item Number: M044-5MG
Micafungin 5 mg CAS number 235114-32-6 and purity >98% by HPLC...
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£912.78 £1,014.20
Manufacturer: TOKU-E Item Number: M035-10MG
Micafungin sodium 10 mg CAS number 208538-73-2 and purity >98% by HPLC...
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£226.39 £251.54
Manufacturer: TOKU-E Item Number: M035-5x10MG
Micafungin sodium 5 x 10 mg CAS number 208538-73-2 and purity >98% by HPLC...
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£941.69 £1,046.32
Manufacturer: TOKU-E Item Number: M041-1G
Miconazole 1 g CAS number 22916-47-8 and purity 99.0% - 101.0% (On Dried Basis)...
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£73.70 £81.89
Manufacturer: TOKU-E Item Number: M041-5G
Miconazole 5 g CAS number 22916-47-8 and purity 99.0% - 101.0% (On Dried Basis)...
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£168.10 £186.78
Manufacturer: TOKU-E Item Number: M005-1G
Miconazole nitrate 1 g CAS number 22832-87-7 and purity (On Dried Basis): 98-102%...
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£41.90 £46.56
Manufacturer: TOKU-E Item Number: M005-5G
Miconazole nitrate 5 g CAS number 22832-87-7 and purity (On Dried Basis): 98-102%...
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£186.89 £207.66
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