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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: O006-5G
Oxacillin sodium 5 g CAS number 7240-38-2 (monohydrate) and purity (On Dried Basis): 815-950µg/mg...
Price excludes taxes and shipping charges. Save -10%
£107.90 £119.88
Brand: TOKU-E Item Number: O033-1G
Oxantel pamoate 1 g CAS number 68813-55-8 and purity (On Dried Basis): 97-103%...
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£21.19 £23.55
Brand: TOKU-E Item Number: O033-5G
Oxantel pamoate 5 g CAS number 68813-55-8 and purity (On Dried Basis): 97-103%...
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£86.70 £96.34
Brand: TOKU-E Item Number: O040-10MG
Oxiracetam 10 mg CAS number 62613-82-5 and purity ≥99.0 - 101.0% (On Dried Basis)...
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£231.21 £256.90
Brand: TOKU-E Item Number: O040-100MG
Oxiracetam 100 mg CAS number 62613-82-5 and purity ≥99.0 - 101.0% (On Dried Basis)...
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£445.07 £494.52
Brand: TOKU-E Item Number: O002-25G
Oxolinic acid 25 g CAS number 14698-29-4 and purity (As Is): 98.0-102.0%...
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£407.98 £453.31
Brand: TOKU-E Item Number: O002-5G
Oxolinic acid 5 g CAS number 14698-29-4 and purity (As Is): 98.0-102.0%...
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£122.35 £135.94
Brand: TOKU-E Item Number: O044-1MG
Oxozeaenol, (5E)-7- 1 mg CAS number 1198574-97-8 and purity >99% by HPLC...
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£185.45 £206.05
Brand: TOKU-E Item Number: O044-5MG
Oxozeaenol, (5E)-7- 5 mg CAS number 1198574-97-8 and purity >99% by HPLC...
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£646.90 £718.77
Brand: TOKU-E Item Number: O029-1MG
Oxychloroaphine 1 mg CAS number 550-89-0 and purity >98% by HPLC...
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£93.93 £104.36
Brand: TOKU-E Item Number: O029-5MG
Oxychloroaphine 5 mg CAS number 550-89-0 and purity >98% by HPLC...
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£325.13 £361.26
Brand: TOKU-E Item Number: O031-1G
Oxymatrine 1 g CAS number 16837-52-8 and purity (On Dried Basis): ≥98%...
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£354.03 £393.37
Brand: TOKU-E Item Number: O031-100MG
Oxymatrine 100 mg CAS number 16837-52-8 and purity (On Dried Basis): ≥98%...
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£122.35 £135.94
Brand: TOKU-E Item Number: O031-500MG
Oxymatrine 500 mg CAS number 16837-52-8 and purity (On Dried Basis): ≥98%...
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£201.82 £224.25
Brand: TOKU-E Item Number: O034-10MG
Oxysophocarpine 10 mg CAS number 26904-64-3 and purity ≥98%...
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£448.44 £498.27
Brand: TOKU-E Item Number: O003-10G
Oxytetracycline Dihydrate 10 g CAS number 6153-64-6 and purity (On Dried Basis): ≥832 µg/mg...
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£56.84 £63.15
Brand: TOKU-E Item Number: O003-50G
Oxytetracycline Dihydrate 50 g CAS number 6153-64-6 and purity (On Dried Basis): ≥832 µg/mg...
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£273.59 £303.99
Brand: TOKU-E Item Number: O004-10G
Oxytetracycline Hydrochloride 10 g CAS number 2058-46-0 and purity (On Dried Basis): ≥835µg/mg...
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£48.17 £53.52
Brand: TOKU-E Item Number: O004-100G
Oxytetracycline Hydrochloride 100 g CAS number 2058-46-0 and purity (On Dried Basis): ≥835µg/mg...
Price excludes taxes and shipping charges. Save -10%
£189.78 £210.87
Brand: TOKU-E Item Number: O004-50G
Oxytetracycline Hydrochloride 50 g CAS number 2058-46-0 and purity (On Dried Basis): ≥835µg/mg...
Price excludes taxes and shipping charges. Save -10%
£112.71 £125.24
Brand: TOKU-E Item Number: O049-10x1ML
Oxytetracycline ReadyMade Solution 10 x 1 mL CAS number 2058-46-0 and purity (On Dried Basis): ≥835µg/mg...
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£121.38 £134.87
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Brand: TOKU-E Item Number: O051-100MG
Ozenoxacin 100 mg CAS number 245765-41-7 and purity >=99.0% (HPLC)...
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£158.95 £176.62
Brand: TOKU-E Item Number: C116-100G
p-Chlorophenoxyacetic Acid 100 g CAS number 122-88-3 and purity nan...
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£71.29 £79.21
Brand: TOKU-E Item Number: C116-25G
p-Chlorophenoxyacetic Acid 25 g CAS number 122-88-3 and purity nan...
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£28.90 £32.11
Brand: TOKU-E Item Number: C116-50G
p-Chlorophenoxyacetic Acid 50 g CAS number 122-88-3 and purity nan...
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£44.31 £49.24
Brand: TOKU-E Item Number: P045-10MG
Paclitaxel (Taxol) 10 mg CAS number 33069-62-4 and purity 98-102 % (HPLC)...
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£150.77 £167.52
Brand: TOKU-E Item Number: P052-250MG
Paclobutrazol 250mg CAS number 76738-62-0 and purity ≥95%...
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£51.54 £57.27
Brand: TOKU-E Item Number: P150-0.1MG
Pactamycin 0.1 mg CAS number 23668-11-3 and purity >95% by HPLC...
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£154.62 £171.80
Brand: TOKU-E Item Number: P150-0.5MG
Pactamycin 0.5 mg CAS number 23668-11-3 and purity >95% by HPLC...
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£539.00 £598.89
Brand: TOKU-E Item Number: P151-0.5MG
Palmarumycin C3 0.5 mg CAS number 159934-11-9 and purity >95% by HPLC...
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£185.45 £206.05
Brand: TOKU-E Item Number: P151-2.5MG
Palmarumycin C3 2.5 mg CAS number 159934-11-9 and purity >95% by HPLC...
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£646.90 £718.77
Brand: TOKU-E Item Number: P069-1MG
Paraherquamide A 1 mg CAS number 77392-58-6 and purity >95% by HPLC...
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£344.40 £382.67
Brand: TOKU-E Item Number: P069-5MG
Paraherquamide A 5 mg CAS number 77392-58-6 and purity >95% by HPLC...
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£1,201.31 £1,334.79
Brand: TOKU-E Item Number: P070-0.5MG
Paraherquamide E 0.5 mg CAS number 125600-53-5 and purity >99% by HPLC...
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£344.40 £382.67
Brand: TOKU-E Item Number: P070-2.5MG
Paraherquamide E 2.5 mg CAS number 125600-53-5 and purity >99% by HPLC...
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£1,201.31 £1,334.79
Brand: TOKU-E Item Number: P002-25G
Paromomycin sulfate 25 g CAS number 1263-89-4 and purity (On Dried Basis): ≥675µg/mg...
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£629.07 £698.97
Brand: TOKU-E Item Number: P002-5G
Paromomycin sulfate 5 g CAS number 1263-89-4 and purity (On Dried Basis): ≥675µg/mg...
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£189.78 £210.87
Brand: TOKU-E Item Number: P071-25MG
Parvodicin 25 mg CAS number 187888-13-7 and purity >95% by HPLC...
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£342.47 £380.53
Brand: TOKU-E Item Number: P071-5MG
Parvodicin 5 mg CAS number 187888-13-7 and purity >95% by HPLC...
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£98.26 £109.18
Brand: TOKU-E Item Number: P072-1MG
Paxilline 1 mg CAS number 57186-25-1 and purity >99% by HPLC...
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£91.04 £101.15
Brand: TOKU-E Item Number: P072-5MG
Paxilline 5 mg CAS number 57186-25-1 and purity >99% by HPLC...
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£312.61 £347.34
Brand: TOKU-E Item Number: P073-1MG
PC-766B 1 mg CAS number 108375-77-5 and purity >95% by HPLC...
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£237.95 £264.39
Brand: TOKU-E Item Number: P073-5MG
PC-766B 5 mg CAS number 108375-77-5 and purity >95% by HPLC...
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£830.42 £922.68
Brand: TOKU-E Item Number: M124-KIT
PCR Mycoplasma Detection Kit II Kit CAS number nan and purity No Reported...
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£370.41 £411.57
Brand: TOKU-E Item Number: M034-Kit
PCR Mycoplasma Detection Kit Kit CAS number nan and purity not reported...
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£317.43 £352.70
Brand: TOKU-E Item Number: P015-100MG
Pefloxacin 100 mg CAS number 70458-92-3 and purity (As Is): ≥99.0%...
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£57.80 £64.22
Brand: TOKU-E Item Number: P015-500MG
Pefloxacin 500 mg CAS number 70458-92-3 and purity (As Is): ≥99.0%...
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£95.37 £105.97
Brand: TOKU-E Item Number: P004-10G
Pefloxacin mesylate dihydrate 10g CAS number 149676-40-4 and purity ≥99.0%...
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£66.95 £74.39
Brand: TOKU-E Item Number: P004-50G
Pefloxacin mesylate dihydrate 50g CAS number 149676-40-4 and purity ≥99.0%...
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£265.41 £294.90
Brand: TOKU-E Item Number: P044-100MG
Penicillin G EvoPure® 100 mg CAS number 61-33-6 and purity >95% by HPLC...
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£611.25 £679.17
Brand: TOKU-E Item Number: P005-1G
Penicillin G Potassium EP 1 g CAS number 113-98-4 and purity (On Dried Basis): ≥96.0%...
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£52.98 £58.87
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