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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.

Kanamycin B Sulfate EvoPure® 100 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: K014-100MG
Kanamycin B Sulfate EvoPure® 100 mg CAS number 29701-07-3 and purity >99% by HPLC...
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£83.81 £93.12
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Kanamycin B, EvoPure® 100 mg
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Manufacturer: TOKU-E Item Number: K001-100MG
Kanamycin B, EvoPure® 100 mg CAS number 4696-76-8 and purity >=99.0%...
Price excludes taxes and shipping charges. Save -10%
£83.81 £93.12
Kanamycin ReadyMadeTM Solution 10 x 1 mL
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Manufacturer: TOKU-E Item Number: K034-10x1ML
Kanamycin ReadyMadeTM Solution 10 x 1 mL CAS number 25389-94-0; 70560-51-9; 133-92-6 and purity ≥ 750 g/mg...
Price excludes taxes and shipping charges. Save -10%
£69.84 £77.60
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Kanamycin Sulfate ReadyMadeTM Solution 10 x 100 mL
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Manufacturer: TOKU-E Item Number: K036-10x100ML
Kanamycin Sulfate ReadyMadeTM Solution 10 x 100 mL CAS number 25389-94-0 and purity..
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£486.50 £540.55
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Kanamycin Sulfate ReadyMadeTM Solution 100 mL
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Manufacturer: TOKU-E Item Number: K036-100ML
Kanamycin Sulfate ReadyMadeTM Solution 100 mL CAS number 25389-94-0 and purity..
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£60.70 £67.44
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Kanamycin Sulfate USP 25 g
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Manufacturer: TOKU-E Item Number: K008-25G
Kanamycin Sulfate USP 25 g CAS number 133-92-6; 25389-94-0 and purity ≥ 750 pg/mg...
Price excludes taxes and shipping charges. Save -10%
£174.85 £194.28
Kanamycin Sulfate USP 5 g
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Manufacturer: TOKU-E Item Number: K008-5G
Kanamycin Sulfate USP 5 g CAS number 133-92-6; 25389-94-0 and purity ≥ 750 pg/mg...
Price excludes taxes and shipping charges. Save -10%
£66.95 £74.39
Karrikin 2 0.25 mg
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Manufacturer: TOKU-E Item Number: K031-0.25MG
Karrikin 2 0.25 mg CAS number 857054-03-6 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£179.67 £199.63
Karrikin 2 1 mg
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Manufacturer: TOKU-E Item Number: K031-1MG
Karrikin 2 1 mg CAS number 857054-03-6 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£627.63 £697.37
Karrikinolide 0.5 mg
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Manufacturer: TOKU-E Item Number: K030-0.5MG
Karrikinolide 0.5 mg CAS number 857054-02-5 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£210.49 £233.88
Karrikinolide 2.5 mg
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Manufacturer: TOKU-E Item Number: K030-2.5MG
Karrikinolide 2.5 mg CAS number 857054-02-5 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£733.60 £815.11
Kasugamycin hydrochloride 1 g
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Manufacturer: TOKU-E Item Number: K005-1G
Kasugamycin hydrochloride 1 g CAS number 19408-46-9 and purity ≥ 73.5%...
Price excludes taxes and shipping charges. Save -10%
£73.70 £81.89
Kasugamycin hydrochloride 10 g
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Manufacturer: TOKU-E Item Number: K005-10G
Kasugamycin hydrochloride 10 g CAS number 19408-46-9 and purity ≥ 73.5%...
Price excludes taxes and shipping charges. Save -10%
£320.80 £356.44
Kasugamycin hydrochloride 50 g
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Manufacturer: TOKU-E Item Number: K005-50G
Kasugamycin hydrochloride 50 g CAS number 19408-46-9 and purity ≥ 73.5%...
Price excludes taxes and shipping charges. Save -10%
£1,089.56 £1,210.62
Kazusamycin A 0.1 mg
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Manufacturer: TOKU-E Item Number: K018-0.1MG
Kazusamycin A 0.1 mg CAS number 92090-94-3 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£357.89 £397.65
Kazusamycin A 0.5 mg
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Manufacturer: TOKU-E Item Number: K018-0.5MG
Kazusamycin A 0.5 mg CAS number 92090-94-3 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£1,248.52 £1,387.24
Kazusamycin B 0.1 mg
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Manufacturer: TOKU-E Item Number: K019-0.1MG
Kazusamycin B 0.1 mg CAS number 107140-30-7 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£357.89 £397.65
Kazusamycin B 0.5 mg
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Manufacturer: TOKU-E Item Number: K019-0.5MG
Kazusamycin B 0.5 mg CAS number 107140-30-7 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£1,248.52 £1,387.24
Kendomycin 0.5 mg
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Manufacturer: TOKU-E Item Number: K017-0.5MG
Kendomycin 0.5 mg CAS number 183202-73-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£243.73 £270.81
Kendomycin 2.5 mg
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Manufacturer: TOKU-E Item Number: K017-2.5MG
Kendomycin 2.5 mg CAS number 183202-73-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£849.68 £944.09
Ketoconazole 1 g
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Manufacturer: TOKU-E Item Number: K006-1G
Ketoconazole 1 g CAS number 65277-42-1 and purity (On Dried Basis): 98.0-102.0%...
Price excludes taxes and shipping charges. Save -10%
£571.75 £635.28
Ketoconazole 100 mg
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Manufacturer: TOKU-E Item Number: K006-100MG
Ketoconazole 100 mg CAS number 65277-42-1 and purity (On Dried Basis): 98.0-102.0%...
Price excludes taxes and shipping charges. Save -10%
£133.43 £148.25
Ketoconazole 500 mg
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Manufacturer: TOKU-E Item Number: K006-500MG
Ketoconazole 500 mg CAS number 65277-42-1 and purity (On Dried Basis): 98.0-102.0%...
Price excludes taxes and shipping charges. Save -10%
£293.82 £326.47
Kibdelone A 1 mg
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Manufacturer: TOKU-E Item Number: K020-1MG
Kibdelone A 1 mg CAS number 934464-77-4 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£278.89 £309.88
Kibdelone A 5 mg
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Manufacturer: TOKU-E Item Number: K020-5MG
Kibdelone A 5 mg CAS number 934464-77-4 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£972.03 £1,080.03
Kibdelone B 0.5 mg
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Manufacturer: TOKU-E Item Number: K021-0.5MG
Kibdelone B 0.5 mg CAS number 934464-78-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£278.89 £309.88
Kibdelone B 2.5 mg
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Manufacturer: TOKU-E Item Number: K021-2.5MG
Kibdelone B 2.5 mg CAS number 934464-78-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£972.03 £1,080.03
Kibdelone C 1 mg
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Manufacturer: TOKU-E Item Number: K022-1MG
Kibdelone C 1 mg CAS number 934464-79-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£278.89 £309.88
Kibdelone C 5 mg
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Manufacturer: TOKU-E Item Number: K022-5MG
Kibdelone C 5 mg CAS number 934464-79-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£972.03 £1,080.03
Kigamicin C 0.5 mg
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Manufacturer: TOKU-E Item Number: K023-0.5MG
Kigamicin C 0.5 mg CAS number 680571-51-1 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£272.63 £302.92
Kigamicin C 2.5 mg
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Manufacturer: TOKU-E Item Number: K023-2.5MG
Kigamicin C 2.5 mg CAS number 680571-51-1 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£949.87 £1,055.41
Kijanimicin 0.5 mg
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Manufacturer: TOKU-E Item Number: K024-0.5MG
Kijanimicin 0.5 mg CAS number 78798-08-0 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£272.63 £302.92
Kijanimicin 2.5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: K024-2.5MG
Kijanimicin 2.5 mg CAS number 78798-08-0 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£949.87 £1,055.41
Kinetin 1 mg
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Manufacturer: TOKU-E Item Number: K015-1MG
Kinetin 1 mg CAS number 525-79-1 and purity >98% by HPLC...
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£47.21 £52.45
Kinetin 5 mg
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Manufacturer: TOKU-E Item Number: K015-5MG
Kinetin 5 mg CAS number 525-79-1 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£161.36 £179.29
Kynurenic acid 25 mg
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Manufacturer: TOKU-E Item Number: K032-25MG
Kynurenic acid 25 mg CAS number 492-27-3 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£280.82 £312.02
Kynurenic acid 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: K032-5MG
Kynurenic acid 5 mg CAS number 492-27-3 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£80.44 £89.38
L-156602 0.5 mg
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Manufacturer: TOKU-E Item Number: L021-0.5MG
L-156602 0.5 mg CAS number 125528-51-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£230.72 £256.36
L-156602 2.5 mg
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Manufacturer: TOKU-E Item Number: L021-2.5MG
L-156602 2.5 mg CAS number 125528-51-5 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£805.85 £895.39
L-681217 0.5 mg
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Manufacturer: TOKU-E Item Number: L022-0.5MG
L-681217 0.5 mg CAS number 93522-10-2 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£308.75 £343.06
L-681217 2.5 mg
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Manufacturer: TOKU-E Item Number: L022-2.5MG
L-681217 2.5 mg CAS number 93522-10-2 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£1,078.97 £1,198.85
L-Alanyl-L-Glutamine 1 g
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Manufacturer: TOKU-E Item Number: A018-1G
L-Alanyl-L-Glutamine 1 g CAS number 39537-23-0 and purity >98.5%...
Price excludes taxes and shipping charges. Save -10%
£42.87 £47.63
L-Alanyl-L-Glutamine 5 g
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Manufacturer: TOKU-E Item Number: A018-5G
L-Alanyl-L-Glutamine 5 g CAS number 39537-23-0 and purity >98.5%...
Price excludes taxes and shipping charges. Save -10%
£85.74 £95.27
L-Penicillamine 1 g
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Manufacturer: TOKU-E Item Number: P112-1G
L-Penicillamine 1 g CAS number 1113-41-3 and purity >85.0%...
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£66.95 £74.39
L-Penicillamine 5 g
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Manufacturer: TOKU-E Item Number: P112-5G
L-Penicillamine 5 g CAS number 1113-41-3 and purity >85.0%...
Price excludes taxes and shipping charges. Save -10%
£166.18 £184.64
Lachnone A 0.5 mg
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Manufacturer: TOKU-E Item Number: L023-0.5MG
Lachnone A 0.5 mg CAS number 903892-99-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£230.72 £256.36
Lachnone A 2.5 mg
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Manufacturer: TOKU-E Item Number: L023-2.5MG
Lachnone A 2.5 mg CAS number 903892-99-9 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£805.85 £895.39
Lactobionic acid 25 g
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Manufacturer: TOKU-E Item Number: L017-25G
Lactobionic acid 25 g CAS number 96-82-2 and purity (On Dried Basis): 98.0-102.0%...
Price excludes taxes and shipping charges. Save -10%
£90.56 £100.62
Lactoferricin B fragment 4-14 trifluoroacetate salt 1 mg
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Manufacturer: TOKU-E Item Number: L043-1MG
Lactoferricin B fragment 4-14 trifluoroacetate salt 1 mg CAS number nan and purity nan...
Price excludes taxes and shipping charges. Save -10%
£220.61 £245.12
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Lagosin 1 mg
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Manufacturer: TOKU-E Item Number: L024-1MG
Lagosin 1 mg CAS number 6834-98-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£261.55 £290.61
Lagosin 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: L024-5MG
Lagosin 5 mg CAS number 6834-98-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£912.78 £1,014.20
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