| 1 | Norma técnica, inte c15 agregados para concreto, requisitos, instituto de normas tecnicas de costa rica, formato digital | 1 | ₡31.580 |
| 2 | Norma técnica, inte c174 especificaciones normales para tubos y accesorios de pvc tipo psm para alcantarillado, instituto de normas tecnicas de costa rica, formato digital | 1 | ₡31.580 |
| 3 | Norma técnica, instuto de normas tecnicas de costa rica, inte, (inte c205) tubos de polietileno (pe) basadas en diámetro externo controlado (dr-pr), última versión vigente, formato digital pdf | 1 | ₡31.580 |
| 4 | Norma técnica, iso 2859-1 sampling procedures for inspection by attributes part 1: sampling schemes indexed by acceptance quality limit (aql) for lot-by-lot inspection, international organization for standardization, formato digital. | 1 | ₡155.375 |
| 5 | Norma técnica, iso 4064-5, water meters for cold potable water and hot waterpart 5: installation requirements, international organization for standardization, formato digital. | 1 | ₡45.914 |
| 6 | Norma técnica raphical symbols, safety colours and safety signs, registered safety signs, (iso 7010), editorial international organization for standardization, iso, última versión vigente, formato digital pdf | 1 | ₡12.341 |
| 7 | Norma técnica, iso 8502-5, preparation of steel substrates before application of paints and related products — tests for the assessment of surface cleanliness part 5: measurement of chloride on steel surfaces prepared for painting (ion detection tube method), international organization for standardization, formato digital. | 1 | ₡30.166 |
| 8 | Norma técnica, aenor une en 805 abastecimiento de agua, requisitos para redes exteriores a los edificios y sus componentes, asociación española de normalización y certificación, formato digital | 1 | ₡82.490 |
| 9 | Norma técnica raphical symbols, safety colours and safety signs, registered safety signs, (iso 7010), editorial international organization for standardization, iso, última versión vigente, formato digital pdf | 1 | ₡12.091 |