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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.

Netilmicin sulfate 50 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N004-50MG
Netilmicin sulfate 50 mg CAS number 56391-57-2 and purity (On Dried Basis): ≥595 μg/mg...
Price excludes taxes and shipping charges. Save -10%
£256.26 £284.73
Nicarbazin 5 g
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Manufacturer: TOKU-E Item Number: N049-5G
Nicarbazin 5 g CAS number 330-95-0 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£83.81 £93.12
Niclosamide Dried 10 x 25 g
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Manufacturer: TOKU-E Item Number: N048-10x25G
Niclosamide Dried 10 x 25 g CAS number 50-65-7 and purity 98-101%...
Price excludes taxes and shipping charges. Save -10%
£394.01 £437.79
Niclosamide Dried 2 x 25 g
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Manufacturer: TOKU-E Item Number: N048-2x25G
Niclosamide Dried 2 x 25 g CAS number 50-65-7 and purity 98-101%...
Price excludes taxes and shipping charges. Save -10%
£106.45 £118.28
Niclosamide monohydrate 1 g
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Manufacturer: TOKU-E Item Number: N051-1G
Niclosamide monohydrate 1 g CAS number 73360-56-2 and purity 98.5-101%...
Price excludes taxes and shipping charges. Save -10%
£316.94 £352.16
Niclosamide monohydrate 100 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N051-100MG
Niclosamide monohydrate 100 mg CAS number 73360-56-2 and purity 98.5-101%...
Price excludes taxes and shipping charges. Save -10%
£42.87 £47.63
Nicotinamide (Vitamin B3) USP 100 g
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Manufacturer: TOKU-E Item Number: N018-100G
Nicotinamide (Vitamin B3) USP 100 g CAS number 98-92-0 and purity 98.5-101.5%...
Price excludes taxes and shipping charges. Save -10%
£26.97 £29.97
Nicotinamide (Vitamin B3) USP 500 g
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Manufacturer: TOKU-E Item Number: N018-500G
Nicotinamide (Vitamin B3) USP 500 g CAS number 98-92-0 and purity 98.5-101.5%...
Price excludes taxes and shipping charges. Save -10%
£121.38 £134.87
Nidulin 1 mg
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Manufacturer: TOKU-E Item Number: N038-1MG
Nidulin 1 mg CAS number 10089-10-8 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£238.43 £264.92
Nidulin 5 mg
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Manufacturer: TOKU-E Item Number: N038-5MG
Nidulin 5 mg CAS number 10089-10-8 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£832.82 £925.36
Nigericin 25 mg
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Manufacturer: TOKU-E Item Number: N039-25MG
Nigericin 25 mg CAS number 28380-24-7 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£468.68 £520.75
Nigericin 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N039-5MG
Nigericin 5 mg CAS number 28380-24-7 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£134.39 £149.32
Nigericin sodium 10 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N015-10MG
Nigericin sodium 10 mg CAS number 28643-80-3 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£197.49 £219.43
Nigericin sodium 50 mg
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Manufacturer: TOKU-E Item Number: N015-50MG
Nigericin sodium 50 mg CAS number 28643-80-3 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£693.62 £770.69
Nikkomycin Z 0.25 mg
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Manufacturer: TOKU-E Item Number: N081-0.25MG
Nikkomycin Z 0.25 mg CAS number 59456-70-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£149.81 £166.45
Nikkomycin Z 1 mg
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Manufacturer: TOKU-E Item Number: N081-1MG
Nikkomycin Z 1 mg CAS number 59456-70-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£523.11 £581.23
Nintedanib 10mg
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Manufacturer: TOKU-E Item Number: N065-10MG
Nintedanib 10mg CAS number 656247-17-5 and purity ≥99%...
Price excludes taxes and shipping charges. Save -10%
£343.44 £381.60
Nintedanib Ethanesulfonate 100mg
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Manufacturer: TOKU-E Item Number: N066-100MG
Nintedanib Ethanesulfonate 100mg CAS number 656247-18-6 and purity ≥99% (by HPLC)...
Price excludes taxes and shipping charges. Save -10%
£156.06 £173.40
Nisin 1 g
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Manufacturer: TOKU-E Item Number: N013-1G
Nisin 1 g CAS number 1414-45-5 and purity (On Dried Basis): ≥900 IU/mg...
Price excludes taxes and shipping charges. Save -10%
£58.76 £65.29
Nisin 25 g
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Manufacturer: TOKU-E Item Number: N013-25G
Nisin 25 g CAS number 1414-45-5 and purity (On Dried Basis): ≥900 IU/mg...
Price excludes taxes and shipping charges. Save -10%
£537.08 £596.75
Nisin 5 g
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N013-5G
Nisin 5 g CAS number 1414-45-5 and purity (On Dried Basis): ≥900 IU/mg...
Price excludes taxes and shipping charges. Save -10%
£155.10 £172.33
Nisin ReadyMade Solution 1 mL
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Manufacturer: TOKU-E Item Number: N084-1ML
Nisin ReadyMade Solution 1 mL CAS number 1414-45-5 and purity Potency: 20,000-40,000 IU/ml...
Price excludes taxes and shipping charges. Save -10%
£103.56 £115.07
Nisin ReadyMade Solution 5 x 1 mL
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Manufacturer: TOKU-E Item Number: N084-5x1ML
Nisin ReadyMade Solution 5 x 1 mL CAS number 1414-45-5 and purity Potency: 20,000-40,000 IU/ml...
Price excludes taxes and shipping charges. Save -10%
£440.74 £489.71
Nisin Z 1 g
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N055-1G
Nisin Z 1 g CAS number 137061-46-2 and purity (On Dried Basis): 95%...
Price excludes taxes and shipping charges. Save -10%
£192.67 £214.08
Nitazoxanide 10 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N052-10MG
Nitazoxanide 10 mg CAS number 55981-09-4 and purity ≥99%...
Price excludes taxes and shipping charges. Save -10%
£63.59 £70.65
Nitazoxanide 50 mg
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Manufacturer: TOKU-E Item Number: N052-50MG
Nitazoxanide 50 mg CAS number 55981-09-4 and purity ≥99%...
Price excludes taxes and shipping charges. Save -10%
£238.43 £264.92
Nitrocefin 10 mg
Actual product may differ from image
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%
£157.03 £174.48
Nitrocefin 100 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N005-100MG
Nitrocefin 100 mg CAS number 41906-86-9 and purity ≥95% (HPLC)...
Price excludes taxes and shipping charges. Save -10%
£978.78 £1,087.53
Nitrocefin 5 x 10 mg
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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%
£705.66 £784.07
Nitroferroin 1 g
Actual product may differ from image
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%
£85.74 £95.27
Nitroferroin 5 g
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Manufacturer: TOKU-E Item Number: N053-5G
Nitroferroin 5 g CAS number 4199-88-6 and purity ≥97% (HPLC)...
Price excludes taxes and shipping charges. Save -10%
£293.82 £326.47
Nitrofurantoin 10 g
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N006-10G
Nitrofurantoin 10 g CAS number 67-20-9 and purity (On Dried Basis): 98.0-102.0%...
Price excludes taxes and shipping charges. Save -10%
£45.76 £50.84
Nitrofurantoin 100 g
Actual product may differ from image
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%
£173.89 £193.21
Nitrofurantoin 250 g
Actual product may differ from image
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%
£238.43 £264.92
Nitrofurantoin macrocrystals 1 g
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N091-1G
Nitrofurantoin macrocrystals 1 g CAS number 67-20-9 and purity 98.0 - 102.0%...
Price excludes taxes and shipping charges. Save -10%
£113.19 £125.77
Nitrofurantoin Monohydrate 1 g
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Manufacturer: TOKU-E Item Number: N045-1G
Nitrofurantoin Monohydrate 1 g CAS number 17140-81-7 and purity 98.0 % - 102.0%...
Price excludes taxes and shipping charges. Save -10%
£175.82 £195.35
Nitrofurantoin Sodium 1 g
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Manufacturer: TOKU-E Item Number: N061-1G
Nitrofurantoin Sodium 1 g CAS number 54-87-5 and purity >98%...
Price excludes taxes and shipping charges. Save -10%
£186.89 £207.66
Nodusmicin 1 mg
Actual product may differ from image
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%
£226.39 £251.54
Nodusmicin 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N040-5MG
Nodusmicin 5 mg CAS number 76265-48-0 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£788.99 £876.66
Nogalamycin 25 mg
Actual product may differ from image
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%
£579.94 £644.38
Nogalamycin 5 mg
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Manufacturer: TOKU-E Item Number: N031-5MG
Nogalamycin 5 mg CAS number 1404-15-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£167.14 £185.71
Nonactin 1 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N032-1MG
Nonactin 1 mg CAS number 6833-84-7 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£293.82 £326.47
Nonactin 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N032-5MG
Nonactin 5 mg CAS number 6833-84-7 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£1,025.98 £1,139.98
Norcantharidin 1 g
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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%
£40.94 £45.49
Norcantharidin 5 g
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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%
£121.38 £134.87
Norfloxacin 10 g
Actual product may differ from image
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%
£135.35 £150.39
Norfloxacin 5 g
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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%
£77.55 £86.17
Nornidulin 1 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N041-1MG
Nornidulin 1 mg CAS number 33403-37-1 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£238.43 £264.92
Nornidulin 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N041-5MG
Nornidulin 5 mg CAS number 33403-37-1 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£832.82 £925.36
Norstictic acid 1 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N070-1MG
Norstictic acid 1 mg CAS number 571-67-5 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£149.81 £166.45
Norstictic acid 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: N070-5 MG
Norstictic acid 5 mg CAS number 571-67-5 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£523.11 £581.23
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