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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: N005-10MG
Nitrocefin 10 mg CAS number 41906-86-9 and purity ≥95% (HPLC)...
Price excludes taxes and shipping charges. Save -10%
£161.84 £179.83
Manufacturer: TOKU-E Item Number: N005-100MG
Nitrocefin 100 mg CAS number 41906-86-9 and purity ≥95% (HPLC)...
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£1,008.16 £1,120.17
Manufacturer: TOKU-E Item Number: N005-5x10MG
Nitrocefin 5 x 10 mg CAS number 41906-86-9 and purity ≥95% (HPLC)...
Price excludes taxes and shipping charges. Save -10%
£726.86 £807.62
Manufacturer: TOKU-E Item Number: N053-1G
Nitroferroin 1 g CAS number 4199-88-6 and purity ≥97% (HPLC)...
Price excludes taxes and shipping charges. Save -10%
£88.63 £98.48
Manufacturer: TOKU-E Item Number: N053-5G
Nitroferroin 5 g CAS number 4199-88-6 and purity ≥97% (HPLC)...
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£302.98 £336.64
Manufacturer: TOKU-E Item Number: N006-10G
Nitrofurantoin 10 g CAS number 67-20-9 and purity (On Dried Basis): 98.0-102.0%...
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£47.20 £52.45
Manufacturer: TOKU-E Item Number: N006-100G
Nitrofurantoin 100 g CAS number 67-20-9 and purity (On Dried Basis): 98.0-102.0%...
Price excludes taxes and shipping charges. Save -10%
£179.19 £199.09
Manufacturer: TOKU-E Item Number: N006-250G
Nitrofurantoin 250 g CAS number 67-20-9 and purity (On Dried Basis): 98.0-102.0%...
Price excludes taxes and shipping charges. Save -10%
£245.66 £272.95
Manufacturer: TOKU-E Item Number: N091-1G
Nitrofurantoin macrocrystals 1 g CAS number 67-20-9 and purity 98.0 - 102.0%...
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£117.05 £130.05
Manufacturer: TOKU-E Item Number: N045-1G
Nitrofurantoin Monohydrate 1 g CAS number 17140-81-7 and purity 98.0 % - 102.0%...
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£181.11 £201.24
Manufacturer: TOKU-E Item Number: N061-1G
Nitrofurantoin Sodium 1 g CAS number 54-87-5 and purity >98%...
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£192.67 £214.08
Manufacturer: TOKU-E Item Number: N040-1MG
Nodusmicin 1 mg CAS number 76265-48-0 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£233.61 £259.57
Manufacturer: TOKU-E Item Number: N040-5MG
Nodusmicin 5 mg CAS number 76265-48-0 and purity >99% by HPLC...
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£813.08 £903.42
Manufacturer: TOKU-E Item Number: N031-25MG
Nogalamycin 25 mg CAS number 1404-15-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£597.76 £664.18
Manufacturer: TOKU-E Item Number: N031-5MG
Nogalamycin 5 mg CAS number 1404-15-5 and purity >95% by HPLC...
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£172.44 £191.60
Manufacturer: TOKU-E Item Number: N032-1MG
Nonactin 1 mg CAS number 6833-84-7 and purity >99% by HPLC...
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£302.98 £336.64
Manufacturer: TOKU-E Item Number: N032-5MG
Nonactin 5 mg CAS number 6833-84-7 and purity >99% by HPLC...
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£1,056.81 £1,174.23
Manufacturer: TOKU-E Item Number: N054-1G
Norcantharidin 1 g CAS number 29745-04-8 and purity ≥98.5%...
Price excludes taxes and shipping charges. Save -10%
£42.39 £47.10
Manufacturer: TOKU-E Item Number: N054-5G
Norcantharidin 5 g CAS number 29745-04-8 and purity ≥98.5%...
Price excludes taxes and shipping charges. Save -10%
£125.24 £139.15
Manufacturer: TOKU-E Item Number: N008-10G
Norfloxacin 10 g CAS number 70458-96-7 and purity (On Dried Basis): 99-101%...
Price excludes taxes and shipping charges. Save -10%
£139.69 £155.21
Manufacturer: TOKU-E Item Number: N008-5G
Norfloxacin 5 g CAS number 70458-96-7 and purity (On Dried Basis): 99-101%...
Price excludes taxes and shipping charges. Save -10%
£79.96 £88.84
Manufacturer: TOKU-E Item Number: N041-1MG
Nornidulin 1 mg CAS number 33403-37-1 and purity >99% by HPLC...
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£245.66 £272.95
Manufacturer: TOKU-E Item Number: N041-5MG
Nornidulin 5 mg CAS number 33403-37-1 and purity >99% by HPLC...
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£857.87 £953.19
Manufacturer: TOKU-E Item Number: N070-1MG
Norstictic acid 1 mg CAS number 571-67-5 and purity >98% by HPLC...
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£154.62 £171.80
Manufacturer: TOKU-E Item Number: N070-5 MG
Norstictic acid 5 mg CAS number 571-67-5 and purity >98% by HPLC...
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£539.00 £598.89
Manufacturer: TOKU-E Item Number: N042-1MG
Nosiheptide 1 mg CAS number 56377-79-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£88.63 £98.48
Manufacturer: TOKU-E Item Number: N042-5MG
Nosiheptide 5 mg CAS number 56377-79-8 and purity >95% by HPLC...
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£305.87 £339.85
Manufacturer: TOKU-E Item Number: N056-10MG
Nourseothricin (Streptothricin) Sulfate 10 mg CAS number 96736-11-7 and purity >85.0%...
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£126.20 £140.22
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Manufacturer: TOKU-E Item Number: N071-0.5 MG
Novobiocic acid 0.5 mg CAS number 485-23-4 and purity >98% by HPLC...
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£185.45 £206.05
Manufacturer: TOKU-E Item Number: N071-2.5 MG
Novobiocic acid 2.5 mg CAS number 485-23-4 and purity >98% by HPLC...
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£646.90 £718.77
Manufacturer: TOKU-E Item Number: N014-1G
Novobiocin sodium 1 g CAS number 1476-53-5 and purity ≥90% (HPLC)...
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£48.17 £53.52
Manufacturer: TOKU-E Item Number: N014-5G
Novobiocin sodium 5 g CAS number 1476-53-5 and purity ≥90% (HPLC)...
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£171.48 £190.53
Manufacturer: TOKU-E Item Number: N064-1G
Novobiocin Sodium, Granulized 1 g CAS number 1476-53-5 and purity ≥90% (by HPLC)...
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£51.54 £57.27
Manufacturer: TOKU-E Item Number: N064-5G
Novobiocin Sodium, Granulized 5 g CAS number 1476-53-6 and purity ≥90% (by HPLC)...
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£191.71 £213.01
Manufacturer: TOKU-E Item Number: N089-1ML
NovobiocinTM ReadyMade Solution 1 mL CAS number 1476-53-5 and purity ≥90.0% (HPLC...
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£106.93 £118.81
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Manufacturer: TOKU-E Item Number: N089-10x1ML
NovobiocinTM ReadyMade Solution 10 x 1 mL CAS number 1476-53-5 and purity ≥90.0% (HPLC...
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£661.35 £734.83
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Manufacturer: TOKU-E Item Number: N043-0.5MG
Nybomycin 0.5 mg CAS number 30408-30-1 and purity >95% by HPLC...
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£267.33 £297.04
Manufacturer: TOKU-E Item Number: N043-2.5MG
Nybomycin 2.5 mg CAS number 30408-30-1 and purity >95% by HPLC...
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£930.61 £1,034.01
Manufacturer: TOKU-E Item Number: N010-25MU
Nystatin 25 MU CAS number 1400-61-9 and purity (On Dried Basis): ≥5000 U/mg...
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£102.60 £114.00
Manufacturer: TOKU-E Item Number: N010-5MU
Nystatin 5 MU CAS number 1400-61-9 and purity (On Dried Basis): ≥5000 U/mg...
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£27.94 £31.04
Manufacturer: TOKU-E Item Number: N044-25MG
Nystatin A1 25 mg CAS number 1400-61-9 and purity >98% by HPLC...
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£201.82 £224.25
Manufacturer: TOKU-E Item Number: N044-5MG
Nystatin A1 5 mg CAS number 1400-61-9 and purity >98% by HPLC...
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£57.80 £64.22
Manufacturer: TOKU-E Item Number: N090-1ML
Nystatin ReadyMadeTM Solution 1 mL CAS number 1400-61-9 and purity ≥85.0% (Nystatin A1)...
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£50.58 £56.20
Manufacturer: TOKU-E Item Number: N090-10x1ML
Nystatin ReadyMadeTM Solution 10 x 1 mL CAS number 1400-61-9 and purity ≥85.0% (Nystatin A1)...
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£328.51 £365.01
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Manufacturer: TOKU-E Item Number: M052-1MG
O-methylsterigmatocystin 1 mg CAS number 17878-69-2 and purity >95% by HPLC...
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£448.44 £498.27
Manufacturer: TOKU-E Item Number: M052-5MG
O-methylsterigmatocystin 5 mg CAS number 17878-69-2 and purity >95% by HPLC...
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£1,249.96 £1,388.84
Manufacturer: TOKU-E Item Number: M054-1MG
O-methylviridicatin 1 mg CAS number 6152-51-4 and purity >99% by HPLC...
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£190.75 £211.94
Manufacturer: TOKU-E Item Number: M054-5MG
O-methylviridicatin 5 mg CAS number 6152-51-4 and purity >99% by HPLC...
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£665.68 £739.65
Manufacturer: TOKU-E Item Number: O014-1MG
Ochratoxin A 1 mg CAS number 303-47-9 and purity >95% by HPLC...
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£98.26 £109.18
Manufacturer: TOKU-E Item Number: O014-5MG
Ochratoxin A 5 mg CAS number 303-47-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£342.47 £380.53
Manufacturer: TOKU-E Item Number: O015-1MG
Ochratoxin B 1 mg CAS number 4825-86-9 and purity >99% by HPLC...
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£190.75 £211.94
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