title: 21N4R-2 (SAMC3168864)
attributes.tag: sample_name
attributes.value: SAMC3168864_21N4R-2
attributes.tag: alkalinity
attributes.value: 2260 umol/kg
attributes.tag: collection_date
attributes.value: 2021-06-21
attributes.tag: depth
attributes.value: 0.5m
attributes.tag: env_broad_scale
attributes.value: surface sea
attributes.tag: env_local_scale
attributes.value: surfacesea water
attributes.tag: env_medium
attributes.value: ocean water
attributes.tag: geo_loc_name
attributes.value: missing: data agreement established pre-2023
attributes.tag: lat_lon
attributes.value: missing
attributes.tag: ngdc_project_id
attributes.value: PRJCA021255
attributes.tag: ngdc_release_date
attributes.value: 2025-11-13
attributes.tag: ngdc_sample_id
attributes.value: SAMC3168864
attributes.tag: BioSampleModel
attributes.value: MIMS.me.water