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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.

Pristinamycin 50 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: P018-50MG
Pristinamycin 50 mg CAS number 270076-60-3 and purity ≥95% (by HPLC)...
Price excludes taxes and shipping charges. Save -10%
£1,116.53 £1,240.59
Prodigiosin 0.5 mg
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Manufacturer: TOKU-E Item Number: P094-0.5MG
Prodigiosin 0.5 mg CAS number 82-89-3 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£274.55 £305.06
Prodigiosin 2.5 mg
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Manufacturer: TOKU-E Item Number: P094-2.5MG
Prodigiosin 2.5 mg CAS number 82-89-3 and purity >95% by HPLC...
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£948.91 £1,054.34
Propineb 1 g
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Manufacturer: TOKU-E Item Number: P122-1G
Propineb 1 g CAS number 12071-83-9 and purity nan...
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£81.41 £90.45
Propineb 250 mg
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Manufacturer: TOKU-E Item Number: P122-250MG
Propineb 250 mg CAS number 12071-83-9 and purity nan...
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£30.83 £34.25
Prothionamide 1 g
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Manufacturer: TOKU-E Item Number: P165-1G
Prothionamide 1 g CAS number 14222-60-7 and purity 99.0 - 101.0%...
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£74.66 £82.96
Prothionamide 5 g
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Manufacturer: TOKU-E Item Number: P165-5G
Prothionamide 5 g CAS number 14222-60-7 and purity 99.0 - 101.0%...
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£208.57 £231.74
Protoporphyrin, disodium salt 100 mg
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Manufacturer: TOKU-E Item Number: P160-100MG
Protoporphyrin, disodium salt 100 mg CAS number 50865-01-5 and purity >95% by HPLC...
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£177.26 £196.95
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Protoporphyrin, disodium salt 25 mg
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Manufacturer: TOKU-E Item Number: P160-25MG
Protoporphyrin, disodium salt 25 mg CAS number 50865-01-5 and purity >95% by HPLC...
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£52.02 £57.80
Pseudo erythromycin A enol ether EvoPure® 5 mg
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Manufacturer: TOKU-E Item Number: P057-5MG
Pseudo erythromycin A enol ether EvoPure® 5 mg CAS number 105882-69-7 and purity >95.0%...
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£474.45 £527.17
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Pseudomonic acid 100 mg
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Manufacturer: TOKU-E Item Number: P095-100MG
Pseudomonic acid 100 mg CAS number 12650-69-0 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£645.93 £717.70
Pseudomonic acid 25 mg
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Manufacturer: TOKU-E Item Number: P095-25MG
Pseudomonic acid 25 mg CAS number 12650-69-0 and purity >95% by HPLC...
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£184.97 £205.52
Pseurotin A 1 mg
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Manufacturer: TOKU-E Item Number: P096-1MG
Pseurotin A 1 mg CAS number 58523-30-1 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£113.19 £125.77
Pseurotin A 5 mg
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Manufacturer: TOKU-E Item Number: P096-5MG
Pseurotin A 5 mg CAS number 58523-30-1 and purity >99% by HPLC...
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£394.01 £437.79
Psychotridine 1 mg
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Manufacturer: TOKU-E Item Number: P161-1MG
Psychotridine 1 mg CAS number 52617-25-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£210.49 £233.88
Psychotridine 5 mg
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Manufacturer: TOKU-E Item Number: P161-5MG
Psychotridine 5 mg CAS number 52617-25-1 and purity >95% by HPLC...
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£733.60 £815.11
Puromycin 25 mg
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Manufacturer: TOKU-E Item Number: P097-25MG
Puromycin 25 mg CAS number 53-79-2 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£315.50 £350.56
Puromycin 5 mg
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Manufacturer: TOKU-E Item Number: P097-5MG
Puromycin 5 mg CAS number 53-79-2 and purity >98% by HPLC...
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£91.04 £101.15
Puromycin Aminonucleoside 100 mg
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Manufacturer: TOKU-E Item Number: P041-100MG
Puromycin Aminonucleoside 100 mg CAS number 58-60-6 and purity ≥ 99% (HPLC)...
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£524.07 £582.30
Puromycin Aminonucleoside 1g
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Manufacturer: TOKU-E Item Number: P041-1G
Puromycin Aminonucleoside is the aminonucleoside portion of Puromycin.  It is a Puromycin derivative that lacks the methoxyphenylalanyl group on ..
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£2,984.97 £3,316.63
Puromycin Aminonucleoside 500 mg
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Manufacturer: TOKU-E Item Number: P041-500MG
Puromycin Aminonucleoside 500 mg CAS number 58-60-6 and purity ≥ 99% (HPLC)...
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£1,733.56 £1,926.18
Puromycin DiHCl Solution (10 mg/mL in 20 mM HEPES) 10 x 1 mL
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Manufacturer: TOKU-E Item Number: P025-10x1ML
Puromycin DiHCl Solution (10 mg/mL in 20 mM HEPES) 10 x 1 mL CAS number 58-58-2 and purity ≥ 99% (HPLC)...
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£195.56 £217.29
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Puromycin DiHCl Solution (10 mg/mL in 20 mM HEPES) 20 mL
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Manufacturer: TOKU-E Item Number: P026-20ML
Puromycin DiHCl Solution (10 mg/mL in 20 mM HEPES) 20 mL CAS number 58-58-2 and purity ≥ 98%...
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£326.58 £362.87
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Puromycin DiHCl Solution (10 mg/mL in 20 mM HEPES) 5 x 1 mL
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Manufacturer: TOKU-E Item Number: P025-5x1ML
Puromycin DiHCl Solution (10 mg/mL in 20 mM HEPES) 5 x 1 mL CAS number 58-58-2 and purity ≥ 99% (HPLC)...
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£122.35 £135.94
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Puromycin Dihydrochloride 1 g
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Manufacturer: TOKU-E Item Number: P001-1G
Puromycin Dihydrochloride 1 g CAS number 58-58-2 and purity ≥ 98%...
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£903.15 £1,003.50
Puromycin Dihydrochloride 100 mg
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Manufacturer: TOKU-E Item Number: P001-100MG
Puromycin Dihydrochloride 100 mg CAS number 58-58-2 and purity ≥ 98%...
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£119.46 £132.73
Puromycin Dihydrochloride 250 mg
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Manufacturer: TOKU-E Item Number: P001-250MG
Puromycin Dihydrochloride 250 mg CAS number 58-58-2 and purity ≥ 98%...
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£233.61 £259.57
Puromycin Dihydrochloride 500 mg
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Manufacturer: TOKU-E Item Number: P001-500MG
Puromycin Dihydrochloride 500 mg CAS number 58-58-2 and purity ≥ 98%...
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£456.63 £507.37
Putrescine Dihydrochloride 100 g
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Manufacturer: TOKU-E Item Number: P103-100G
Putrescine Dihydrochloride 100 g CAS number 333-93-7 and purity ≥ 98%...
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£166.18 £184.64
Putrescine Dihydrochloride 25 g
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Manufacturer: TOKU-E Item Number: P103-25G
Putrescine Dihydrochloride 25 g CAS number 333-93-7 and purity ≥ 98%...
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£35.16 £39.07
Pyoluteorin 1 mg
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Manufacturer: TOKU-E Item Number: P098-1MG
Pyoluteorin 1 mg CAS number 25683-07-2 and purity >98% by HPLC...
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£261.55 £290.61
Pyoluteorin 5 mg
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Manufacturer: TOKU-E Item Number: P098-5MG
Pyoluteorin 5 mg CAS number 25683-07-2 and purity >98% by HPLC...
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£912.78 £1,014.20
Pyrantel (+)-tartrate salt 100mg
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Manufacturer: TOKU-E Item Number: P082-100MG
Pyrantel (+)-tartrate salt 100mg CAS number 33401-94-4 and purity ≥99%...
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£63.59 £70.65
Pyrantel (+)-tartrate salt 500mg
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Manufacturer: TOKU-E Item Number: P082-500MG
Pyrantel (+)-tartrate salt 500mg CAS number 33401-94-4 and purity ≥99%...
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£121.38 £134.87
Pyrantel Citrate Salt 10 g
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Manufacturer: TOKU-E Item Number: P127-10G
Pyrantel Citrate Salt 10 g CAS number 5685-86-9 and purity ≥99% ...
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£203.75 £226.39
Pyrantel Pamoate 25 g
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Manufacturer: TOKU-E Item Number: P129-25G
Pyrantel Pamoate 25 g CAS number 22204-24-6 and purity (On Dried Basis): 97-103% ...
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£145.95 £162.17
Pyrantel Pamoate 5 g
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Manufacturer: TOKU-E Item Number: P129-5G
Pyrantel Pamoate 5 g CAS number 22204-24-6 and purity (On Dried Basis): 97-103% ...
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£54.91 £61.01
Pyrazinamide 10 g
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Manufacturer: TOKU-E Item Number: P020-10G
Pyrazinamide 10 g CAS number 98-96-4 and purity 99.0-100.5%...
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£45.76 £50.84
Pyrazinamide 100 g
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Manufacturer: TOKU-E Item Number: P020-100G
Pyrazinamide 100 g CAS number 98-96-4 and purity 99.0-100.5%...
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£224.46 £249.40
Pyrazinamide 25 g
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Manufacturer: TOKU-E Item Number: P020-25G
Pyrazinamide 25 g CAS number 98-96-4 and purity 99.0-100.5%...
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£71.77 £79.74
Pyrazinecarboxamide 10 g
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Manufacturer: TOKU-E Item Number: P128-10G
Pyrazinecarboxamide 10 g CAS number 98-96-4 and purity ≥99%...
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£48.65 £54.06
Pyrazinecarboxamide 100 g
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Manufacturer: TOKU-E Item Number: P128-100G
Pyrazinecarboxamide 100 g CAS number 98-96-4 and purity ≥99%...
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£249.51 £277.23
Pyrazinecarboxamide 25 g
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Manufacturer: TOKU-E Item Number: P128-25G
Pyrazinecarboxamide 25 g CAS number 98-96-4 and purity ≥99%...
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£69.84 £77.60
Pyrenophorin 0.1 mg
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Manufacturer: TOKU-E Item Number: P162-0.1MG
Pyrenophorin 0.1 mg CAS number 5739-85-5 and purity >95% by HPLC...
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£149.81 £166.45
Pyrenophorin 0.5 mg
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Manufacturer: TOKU-E Item Number: P162-0.5MG
Pyrenophorin 0.5 mg CAS number 5739-85-5 and purity >95% by HPLC...
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£523.11 £581.23
Pyrenophorol 0.5 mg
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Manufacturer: TOKU-E Item Number: P099-0.5MG
Pyrenophorol 0.5 mg CAS number 22248-41-5 and purity >95% by HPLC...
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£230.72 £256.36
Pyrenophorol 2.5 mg
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Manufacturer: TOKU-E Item Number: P099-2.5MG
Pyrenophorol 2.5 mg CAS number 22248-41-5 and purity >95% by HPLC...
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£805.85 £895.39
Pyridomycin 0.5 mg
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Manufacturer: TOKU-E Item Number: P100-0.5MG
Pyridomycin 0.5 mg CAS number 18791-21-4 and purity >95% by HPLC...
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£261.55 £290.61
Pyridomycin 2.5 mg
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Manufacturer: TOKU-E Item Number: P100-2.5MG
Pyridomycin 2.5 mg CAS number 18791-21-4 and purity >95% by HPLC...
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£912.78 £1,014.20
Pyridoxine Hydrochloride 10 g
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Manufacturer: TOKU-E Item Number: P024-10G
Pyridoxine Hydrochloride 10 g CAS number 58-56-0 and purity 98.0% - 102.0 %...
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£31.79 £35.32
Pyridoxine Hydrochloride 100 g
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Manufacturer: TOKU-E Item Number: P024-100G
Pyridoxine Hydrochloride 100 g CAS number 58-56-0 and purity 98.0% - 102.0 %...
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£135.35 £150.39
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