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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.

Hygromycin B EvoPure® 1 g
Actual product may differ from image
Manufacturer: TOKU-E Item Number: H010-1G
Hygromycin B EvoPure® 1 g CAS number 31282-04-9 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£166.18 £184.64
Hygromycin B EvoPure® 500 mg
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Manufacturer: TOKU-E Item Number: H010-500MG
Hygromycin B EvoPure® 500 mg CAS number 31282-04-9 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£119.46 £132.73
Hygromycin B Solution (50 mg/ml in PBS Buffer) 20 mL
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Manufacturer: TOKU-E Item Number: H011-20ML
Hygromycin B Solution (50 mg/ml in PBS Buffer) 20 mL CAS number 31282-04-9 and purity Hgromycin B - ≥ 900 µg/mg...
Price excludes taxes and shipping charges. Save -10%
£106.45 £118.28
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Hygromycin B Solution (50 mg/ml in PBS Buffer) 5x20mL
Actual product may differ from image
Manufacturer: TOKU-E Item Number: H011-5x20ML
Hygromycin B Solution (50 mg/ml in PBS Buffer) 5x20mL CAS number 31282-04-9 and purity Hgromycin B - ≥ 900 µg/mg...
Price excludes taxes and shipping charges. Save -10%
£438.81 £487.57
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Hygromycin B Solution (Low Endotoxin) 20 mL
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Manufacturer: TOKU-E Item Number: H026-20ML
Hygromycin B Solution (Low Endotoxin) 20 mL CAS number 31282-04-9 and purity ≥ 98.0% (by HPLC)...
Price excludes taxes and shipping charges. Save -10%
£117.53 £130.59
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Icariin 1 g
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Manufacturer: TOKU-E Item Number: I032-1G
Icariin 1 g CAS number 489-32-7 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£159.92 £177.69
Icariin 5 g
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Manufacturer: TOKU-E Item Number: I032-5G
Icariin 5 g CAS number 489-32-7 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£437.85 £486.50
Icaritin 10 mg
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Manufacturer: TOKU-E Item Number: I033-10MG
Icaritin 10 mg CAS number 118525-40-9 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£180.63 £200.70
Icotinib hydrochloride 10 mg
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Manufacturer: TOKU-E Item Number: I035-10MG
Icotinib hydrochloride 10 mg CAS number 1204313-51-8 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£412.80 £458.67
Idarubicin Hydrochloride 10 mg
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Manufacturer: TOKU-E Item Number: I051-10MG
Idarubicin Hydrochloride 10 mg CAS number 57852-57-0 and purity 970 - 1030 ug/mg...
Price excludes taxes and shipping charges. Save -10%
£121.38 £134.87
Idarubicin Hydrochloride 5 x 10 mg
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Manufacturer: TOKU-E Item Number: I051-5x10MG
Idarubicin Hydrochloride 5 x 10 mg CAS number 57852-57-0 and purity 970 - 1030 ug/mg...
Price excludes taxes and shipping charges. Save -10%
£384.38 £427.09
Idelalisib 100mg
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Manufacturer: TOKU-E Item Number: I044-100MG
Idelalisib 100mg CAS number 870281-82-6 and purity ≥99% (by HPLC)...
Price excludes taxes and shipping charges. Save -10%
£117.53 £130.59
Idelalisib 25mg
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Manufacturer: TOKU-E Item Number: I044-25MG
Idelalisib 25mg CAS number 870281-82-6 and purity ≥99% (by HPLC)...
Price excludes taxes and shipping charges. Save -10%
£46.72 £51.91
Ikarugamycin 0.5 mg
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Manufacturer: TOKU-E Item Number: I018-0.5MG
Ikarugamycin 0.5 mg CAS number 36531-78-9 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£184.97 £205.52
Ikarugamycin 2.5 mg
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Manufacturer: TOKU-E Item Number: I018-2.5MG
Ikarugamycin 2.5 mg CAS number 36531-78-9 and purity >99% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£645.93 £717.70
Illudin S 1 mg
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Manufacturer: TOKU-E Item Number: I019-1MG
Illudin S 1 mg CAS number 1149-99-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£261.55 £290.61
Illudin S 5 mg
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Manufacturer: TOKU-E Item Number: I019-5MG
Illudin S 5 mg CAS number 1149-99-1 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£912.78 £1,014.20
Imatinib Mesylate 100 mg
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Manufacturer: TOKU-E Item Number: I031-100MG
Imatinib Mesylate 100 mg CAS number 220127-57-1 and purity 98.0 - 102.0%...
Price excludes taxes and shipping charges. Save -10%
£122.35 £135.94
Imatinib Mesylate 25 mg
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Manufacturer: TOKU-E Item Number: I031-25MG
Imatinib Mesylate 25 mg CAS number 220127-57-1 and purity 98.0 - 102.0%...
Price excludes taxes and shipping charges. Save -10%
£43.83 £48.70
Imazapyr 1 g
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Manufacturer: TOKU-E Item Number: I012-1G
Imazapyr 1 g CAS number 81334-34-1 and purity (As Is): ≥98.0%...
Price excludes taxes and shipping charges. Save -10%
£366.56 £407.29
Imazapyr 100 mg
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Manufacturer: TOKU-E Item Number: I012-100MG
Imazapyr 100 mg CAS number 81334-34-1 and purity (As Is): ≥98.0%...
Price excludes taxes and shipping charges. Save -10%
£52.98 £58.87
Imipenem 10 mg
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Manufacturer: TOKU-E Item Number: I001-10MG
Imipenem 10 mg CAS number 74431-23-5 and purity (On Dried Basis): ≥ 95.0%...
Price excludes taxes and shipping charges. Save -10%
£86.71 £96.34
Imipenem 25 mg
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Manufacturer: TOKU-E Item Number: I001-25MG
Imipenem 25 mg CAS number 74431-23-5 and purity (On Dried Basis): ≥ 95.0%...
Price excludes taxes and shipping charges. Save -10%
£145.95 £162.17
Imipenem mixture w/cilastatin 10 mg
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Manufacturer: TOKU-E Item Number: I005-10MG
Imipenem mixture w/cilastatin 10 mg CAS number 74431-23-5; 82009-34-4 and purity Imipenem: ≥ 400µg/mg Cilastatin: ≥ 400µg/mg Imipenem/Cilastatin: 0.95..
Price excludes taxes and shipping charges. Save -10%
£137.28 £152.53
Imipenem mixture w/cilastatin 25 mg
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Manufacturer: TOKU-E Item Number: I005-25MG
Imipenem mixture w/cilastatin 25 mg CAS number 74431-23-5; 82009-34-5 and purity Imipenem: ≥ 400µg/mg Cilastatin: ≥ 400µg/mg Imipenem/Cilastatin: 0.95..
Price excludes taxes and shipping charges. Save -10%
£288.05 £320.05
Imipenem mixture w/cilastatin 50 mg
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Manufacturer: TOKU-E Item Number: I005-50MG
Imipenem mixture w/cilastatin 50 mg CAS number 74431-23-5; 82009-34-5 and purity Imipenem: ≥ 400µg/mg Cilastatin: ≥ 400µg/mg Imipenem/Cilastatin: 0.95..
Price excludes taxes and shipping charges. Save -10%
£543.82 £604.24
Indanomycin 1 mg
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Manufacturer: TOKU-E Item Number: I020-1MG
Indanomycin 1 mg CAS number 66513-28-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£262.51 £291.68
Indanomycin 5 mg
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Manufacturer: TOKU-E Item Number: I020-5MG
Indanomycin 5 mg CAS number 66513-28-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£915.68 £1,017.42
Indole-3-butyric acid  25 g
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Manufacturer: TOKU-E Item Number: I015-25G
Indole-3-butyric acid 25 g CAS number 133-32-4 and purity ≥ 95.0%...
Price excludes taxes and shipping charges. Save -10%
£121.38 £134.87
Indole-3-butyric acid  5 g
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Manufacturer: TOKU-E Item Number: I015-5G
Indole-3-butyric acid 5 g CAS number 133-32-4 and purity ≥ 95.0%...
Price excludes taxes and shipping charges. Save -10%
£40.94 £45.49
Indole-3-carbinol 1 g
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Manufacturer: TOKU-E Item Number: I034-1G
Indole-3-carbinol 1 g CAS number 700-06-1 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£43.83 £48.70
Indole-3-carbinol 25 g
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Manufacturer: TOKU-E Item Number: I034-25G
Indole-3-carbinol 25 g CAS number 700-06-1 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£220.61 £245.12
Indole-3-carbinol 5 g
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Manufacturer: TOKU-E Item Number: I034-5G
Indole-3-carbinol 5 g CAS number 700-06-1 and purity ≥98%...
Price excludes taxes and shipping charges. Save -10%
£61.66 £68.51
Indole-3-carboxaldehyde 100 mg
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Manufacturer: TOKU-E Item Number: I047-100MG
Indole-3-carboxaldehyde 100 mg CAS number 487-89-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£177.26 £196.95
Indole-3-carboxaldehyde 25 mg
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Manufacturer: TOKU-E Item Number: I047-25MG
Indole-3-carboxaldehyde 25 mg CAS number 487-89-8 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£52.02 £57.80
Indole-3-carboxylic acid 100 mg
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Manufacturer: TOKU-E Item Number: I048-100MG
Indole-3-carboxylic acid 100 mg CAS number 771-50-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£211.46 £234.95
Indole-3-carboxylic acid 25 mg
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Manufacturer: TOKU-E Item Number: I048-25MG
Indole-3-carboxylic acid 25 mg CAS number 771-50-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£61.17 £67.97
Indole-3-propionic acid 100 mg
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Manufacturer: TOKU-E Item Number: I049-100MG
Indole-3-propionic acid 100 mg CAS number 830-96-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£177.26 £196.95
Indole-3-propionic acid 25 mg
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Manufacturer: TOKU-E Item Number: I049-25MG
Indole-3-propionic acid 25 mg CAS number 830-96-6 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£52.02 £57.80
Indolmycin 1 mg
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Manufacturer: TOKU-E Item Number: I021-1MG
Indolmycin 1 mg CAS number 21200-24-8 and purity >95% by HPLC (total diastereoisomers)...
Price excludes taxes and shipping charges. Save -10%
£272.63 £302.92
Indolmycin 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: I021-5MG
Indolmycin 5 mg CAS number 21200-24-8 and purity >95% by HPLC (total diastereoisomers)...
Price excludes taxes and shipping charges. Save -10%
£949.87 £1,055.41
Indomethacin 25 g
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Manufacturer: TOKU-E Item Number: I037-25G
Indomethacin 25 g CAS number 53-86-1 and purity ≥ 99.0%...
Price excludes taxes and shipping charges. Save -10%
£110.30 £122.56
Indomethacin 5 x 1 g
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Manufacturer: TOKU-E Item Number: I037-5x1G
Indomethacin 5 x 1 g CAS number 53-86-1 and purity ≥ 99.0%...
Price excludes taxes and shipping charges. Save -10%
£38.05 £42.28
Ingenol-3-mebutate 1 mg
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Manufacturer: TOKU-E Item Number: I036-1MG
Ingenol-3-mebutate 1 mg CAS number 75567-37-2 and purity >98.0%...
Price excludes taxes and shipping charges. Save -10%
£146.92 £163.24
Integracin A 1 mg
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Manufacturer: TOKU-E Item Number: I022-1MG
Integracin A 1 mg CAS number 224186-03-2 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£261.55 £290.61
Integracin A 5 mg
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Manufacturer: TOKU-E Item Number: I022-5MG
Integracin A 5 mg CAS number 224186-03-2 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£912.78 £1,014.20
Integracin B 1 mg
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Manufacturer: TOKU-E Item Number: I023-1MG
Integracin B 1 mg CAS number 224186-05-4 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£261.55 £290.61
Integracin B 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: I023-5MG
Integracin B 5 mg CAS number 224186-05-4 and purity >95% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£912.78 £1,014.20
Ionomycin 1 mg
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Manufacturer: TOKU-E Item Number: I003-1MG
Ionomycin 1 mg CAS number 56092-81-0 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£91.04 £101.15
Ionomycin 5 mg
Actual product may differ from image
Manufacturer: TOKU-E Item Number: I003-5MG
Ionomycin 5 mg CAS number 56092-81-0 and purity >98% by HPLC...
Price excludes taxes and shipping charges. Save -10%
£315.50 £350.56
IPTG (Isopropyl  β-D-1-thiogalactopyranoside) 10g
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Manufacturer: TOKU-E Item Number: I011-10G
IPTG (Isopropyl β-D-1-thiogalactopyranoside) 10g CAS number 367-93-1 and purity ≥ 98.0%...
Price excludes taxes and shipping charges. Save -10%
£192.67 £214.08
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