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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.

p-Chlorophenoxyacetic Acid 50 g
Actual product may differ from image
Manufacturer: TOKU-E Item Number: C116-50G
p-Chlorophenoxyacetic Acid 50 g CAS number 122-88-3 and purity nan...
Price excludes taxes and shipping charges. Save -10%
£42.87 £47.63
Paclitaxel (Taxol) 10 mg
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Manufacturer: TOKU-E Item Number: P045-10MG
Paclitaxel (Taxol) 10 mg CAS number 33069-62-4 and purity 98-102 % (HPLC)...
Price excludes taxes and shipping charges. Save -10%
£145.95 £162.17
Paclobutrazol 250mg
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Manufacturer: TOKU-E Item Number: P052-250MG
Paclobutrazol 250mg CAS number 76738-62-0 and purity ≥95%...
Price excludes taxes and shipping charges. Save -10%
£49.62 £55.13
Pactamycin 0.1 mg
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Manufacturer: TOKU-E Item Number: P150-0.1MG
Pactamycin 0.1 mg CAS number 23668-11-3 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£149.81 £166.45
Pactamycin 0.5 mg
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Manufacturer: TOKU-E Item Number: P150-0.5MG
Pactamycin 0.5 mg CAS number 23668-11-3 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£523.11 £581.23
Palmarumycin C3 0.5 mg
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Manufacturer: TOKU-E Item Number: P151-0.5MG
Palmarumycin C3 0.5 mg CAS number 159934-11-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£179.67 £199.63
Palmarumycin C3 2.5 mg
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Manufacturer: TOKU-E Item Number: P151-2.5MG
Palmarumycin C3 2.5 mg CAS number 159934-11-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£627.63 £697.37
Paraherquamide A 1 mg
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Manufacturer: TOKU-E Item Number: P069-1MG
Paraherquamide A 1 mg CAS number 77392-58-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£334.29 £371.43
Paraherquamide A 5 mg
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Manufacturer: TOKU-E Item Number: P069-5MG
Paraherquamide A 5 mg CAS number 77392-58-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£1,166.15 £1,295.72
Paraherquamide E 0.5 mg
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Manufacturer: TOKU-E Item Number: P070-0.5MG
Paraherquamide E 0.5 mg CAS number 125600-53-5 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£334.29 £371.43
Paraherquamide E 2.5 mg
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Manufacturer: TOKU-E Item Number: P070-2.5MG
Paraherquamide E 2.5 mg CAS number 125600-53-5 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£1,166.15 £1,295.72
Paromomycin sulfate 25 g
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Manufacturer: TOKU-E Item Number: P002-25G
Paromomycin sulfate 25 g CAS number 1263-89-4 and purity (On Dried Basis): ≥675µg/mg...
Price excludes taxes and shipping charges. Save -10%
£610.29 £678.10
Paromomycin sulfate 5 g
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Manufacturer: TOKU-E Item Number: P002-5G
Paromomycin sulfate 5 g CAS number 1263-89-4 and purity (On Dried Basis): ≥675µg/mg...
Price excludes taxes and shipping charges. Save -10%
£184.01 £204.45
Parvodicin 25 mg
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Manufacturer: TOKU-E Item Number: P071-25MG
Parvodicin 25 mg CAS number 187888-13-7 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£332.36 £369.29
Parvodicin 5 mg
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Manufacturer: TOKU-E Item Number: P071-5MG
Parvodicin 5 mg CAS number 187888-13-7 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£95.37 £105.97
Paxilline 1 mg
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Manufacturer: TOKU-E Item Number: P072-1MG
Paxilline 1 mg CAS number 57186-25-1 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£88.15 £97.94
Paxilline 5 mg
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Manufacturer: TOKU-E Item Number: P072-5MG
Paxilline 5 mg CAS number 57186-25-1 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£303.46 £337.18
PC-766B 1 mg
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Manufacturer: TOKU-E Item Number: P073-1MG
PC-766B 1 mg CAS number 108375-77-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£230.72 £256.36
PC-766B 5 mg
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Manufacturer: TOKU-E Item Number: P073-5MG
PC-766B 5 mg CAS number 108375-77-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£805.85 £895.39
PCR Mycoplasma Detection Kit II Kit
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Manufacturer: TOKU-E Item Number: M124-KIT
PCR Mycoplasma Detection Kit II Kit CAS number nan and purity No Reported...
Price excludes taxes and shipping charges. Save -10%
£370.41 £411.57
PCR Mycoplasma Detection Kit Kit
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Manufacturer: TOKU-E Item Number: M034-Kit
PCR Mycoplasma Detection Kit Kit CAS number nan and purity not reported...
Price excludes taxes and shipping charges. Save -10%
£307.79 £341.99
Pefloxacin 100 mg
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Manufacturer: TOKU-E Item Number: P015-100MG
Pefloxacin 100 mg CAS number 70458-92-3 and purity (As Is): ≥99.0%...
Price excludes taxes and shipping charges. Save -10%
£55.87 £62.08
Pefloxacin 500 mg
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Manufacturer: TOKU-E Item Number: P015-500MG
Pefloxacin 500 mg CAS number 70458-92-3 and purity (As Is): ≥99.0%...
Price excludes taxes and shipping charges. Save -10%
£92.48 £102.76
Pefloxacin mesylate dihydrate 10g
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Manufacturer: TOKU-E Item Number: P004-10G
Pefloxacin mesylate dihydrate 10g CAS number 149676-40-4 and purity ≥99.0%...
Price excludes taxes and shipping charges. Save -10%
£64.55 £71.72
Pefloxacin mesylate dihydrate 50g
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Manufacturer: TOKU-E Item Number: P004-50G
Pefloxacin mesylate dihydrate 50g CAS number 149676-40-4 and purity ≥99.0%...
Price excludes taxes and shipping charges. Save -10%
£257.22 £285.80
Penicillin G EvoPure® 100 mg
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Manufacturer: TOKU-E Item Number: P044-100MG
Penicillin G EvoPure® 100 mg CAS number 61-33-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£593.43 £659.37
Penicillin G Potassium EP 1 g
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Manufacturer: TOKU-E Item Number: P005-1G
Penicillin G Potassium EP 1 g CAS number 113-98-4 and purity (On Dried Basis): ≥96.0%...
Price excludes taxes and shipping charges. Save -10%
£51.06 £56.73
Penicillin G Potassium EP 5 g
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Manufacturer: TOKU-E Item Number: P005-5G
Penicillin G Potassium EP 5 g CAS number 113-98-4 and purity (On Dried Basis): ≥96.0%...
Price excludes taxes and shipping charges. Save -10%
£134.39 £149.32
Penicillin G Potassium USP 10 MU
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Manufacturer: TOKU-E Item Number: P028-10MU
Penicillin G Potassium USP 10 MU CAS number 113-98-4 and purity (On Dried Basis): 1440-1680 u/mg...
Price excludes taxes and shipping charges. Save -10%
£32.75 £36.39
Penicillin G Potassium USP 100 MU
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Manufacturer: TOKU-E Item Number: P028-100MU
Penicillin G Potassium USP 100 MU CAS number 113-98-4 and purity (On Dried Basis): 1440-1680 u/mg...
Price excludes taxes and shipping charges. Save -10%
£116.57 £129.52
Penicillin G sodium salt EP 1 g
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Manufacturer: TOKU-E Item Number: P016-1G
Penicillin G sodium salt EP 1 g CAS number 69-57-8 and purity (On Dried Basis): 96-102%...
Price excludes taxes and shipping charges. Save -10%
£45.76 £50.84
Penicillin G sodium salt EP 5 g
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Manufacturer: TOKU-E Item Number: P016-5G
Penicillin G sodium salt EP 5 g CAS number 69-57-8 and purity (On Dried Basis): 96-102%...
Price excludes taxes and shipping charges. Save -10%
£131.01 £145.57
Penicillin G Sodium, USP 100 MU
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Manufacturer: TOKU-E Item Number: P006-100MU
Penicillin G Sodium, USP 100 MU CAS number 69-57-8 and purity (On Dried Basis): 1500-1750 U/mg...
Price excludes taxes and shipping charges. Save -10%
£127.16 £141.29
Penicillin G Sodium, USP 25 MU
Actual product may differ from image
Manufacturer: TOKU-E Item Number: P006-25MU
Penicillin G Sodium, USP 25 MU CAS number 69-57-8 and purity (On Dried Basis): 1500-1750 U/mg...
Price excludes taxes and shipping charges. Save -10%
£43.83 £48.70
Penicillin V potassium 10 g
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Manufacturer: TOKU-E Item Number: P027-10G
Penicillin V potassium 10 g CAS number 132-98-9 and purity (On Dried Basis): 95-102%...
Price excludes taxes and shipping charges. Save -10%
£43.83 £48.70
Penicillin V potassium 25 g
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Manufacturer: TOKU-E Item Number: P027-25G
Penicillin V potassium 25 g CAS number 132-98-9 and purity (On Dried Basis): 95-102%...
Price excludes taxes and shipping charges. Save -10%
£73.70 £81.89
Penicillin-Streptomycin Solution (100X)
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Manufacturer: TOKU-E Item Number: P030-PleaseContactusforPricing
Penicillin-Streptomycin Solution (100X) Please Contact us for Pricing CAS number nan and purity not reported...
Price excludes taxes and shipping charges. Save -100%
£0.00 Price available post quote
Request A Quote
Penicillin-Streptomycin Solution (100X) 10 x 100 mL
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Manufacturer: TOKU-E Item Number: P030-10x100ML
Penicillin-Streptomycin Solution (100X) 10 x 100 mL CAS number nan and purity not reported...
Price excludes taxes and shipping charges. Save -100%
£0.00 £0.00
Add to Cart Request A Quote
Penicinoline 1 mg
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Manufacturer: TOKU-E Item Number: P147-1MG
Penicinoline 1 mg CAS number 1214268-60-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£210.49 £233.88
Penicinoline 5 mg
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Manufacturer: TOKU-E Item Number: P147-5MG
Penicinoline 5 mg CAS number 1214268-60-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£733.60 £815.11
Penicolinate B 0.1 mg
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Manufacturer: TOKU-E Item Number: P152-0.1MG
Penicolinate B 0.1 mg CAS number 1418291-70-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£149.81 £166.45
Penicolinate B 0.5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: P152-0.5MG
Penicolinate B 0.5 mg CAS number 1418291-70-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£523.11 £581.23
Penigequinolone A 0.5 mg
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Manufacturer: TOKU-E Item Number: P074-0.5MG
Penigequinolone A 0.5 mg CAS number 180045-91-4 and purity >99% by HPLC (total epimers)...
Price excludes taxes and shipping charges. Save -10%
£243.73 £270.81
Penigequinolone A 2.5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: P074-2.5MG
Penigequinolone A 2.5 mg CAS number 180045-91-4 and purity >99% by HPLC (total epimers)...
Price excludes taxes and shipping charges. Save -10%
£849.68 £944.09
Penipurdin A 0.1 mg
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Manufacturer: TOKU-E Item Number: P153-0.1MG
Penipurdin A 0.1 mg CAS number 1821668-16-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£160.40 £178.22
Penipurdin A 0.5 mg
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Manufacturer: TOKU-E Item Number: P153-0.5MG
Penipurdin A 0.5 mg CAS number 1821668-16-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£557.31 £619.23
Penitrem A 1 mg
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Manufacturer: TOKU-E Item Number: P075-1MG
Penitrem A 1 mg CAS number 12627-35-9 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£119.93 £133.26
Penitrem A 5 mg
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Manufacturer: TOKU-E Item Number: P075-5MG
Penitrem A 5 mg CAS number 12627-35-9 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£416.66 £462.95
Pentalenic acid 0.1 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: P154-0.1MG
Pentalenic acid 0.1 mg CAS number 69394-19-0 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£149.81 £166.45
Pentalenic acid 0.5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: P154-0.5MG
Pentalenic acid 0.5 mg CAS number 69394-19-0 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£523.11 £581.23
Pentamidine 25 mg
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Manufacturer: TOKU-E Item Number: P113-25MG
Pentamidine 25 mg CAS number 100-33-4 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£324.65 £360.72
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