<?xml version="1.0" encoding="UTF-8" standalone="no"?><ContractNotice xmlns="urn:oasis:names:specification:ubl:schema:xsd:ContractNotice-2" xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2" xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2" xmlns:efac="http://data.europa.eu/p27/eforms-ubl-extension-aggregate-components/1" xmlns:efbc="http://data.europa.eu/p27/eforms-ubl-extension-basic-components/1" xmlns:efext="http://data.europa.eu/p27/eforms-ubl-extensions/1" xmlns:ext="urn:oasis:names:specification:ubl:schema:xsd:CommonExtensionComponents-2"><ext:UBLExtensions><ext:UBLExtension><ext:ExtensionContent><efext:EformsExtension><efac:NoticeSubType><cbc:SubTypeCode listName="notice-subtype">16</cbc:SubTypeCode></efac:NoticeSubType><efac:Organizations><efac:Organization><efac:Company><cac:PartyIdentification><cbc:ID schemeName="organization">ORG-0000</cbc:ID></cac:PartyIdentification><cac:PartyName><cbc:Name languageID="DEU">Physikalisch - Technische Bundesanstalt Braunschweig</cbc:Name></cac:PartyName><cac:PostalAddress><cbc:CityName>Braunschweig</cbc:CityName><cbc:PostalZone>38116</cbc:PostalZone><cbc:CountrySubentityCode listName="nuts-lvl3">DE911</cbc:CountrySubentityCode><cac:Country><cbc:IdentificationCode listName="country">DEU</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:CompanyID>991-01483-67</cbc:CompanyID></cac:PartyLegalEntity><cac:Contact><cbc:Telephone>000</cbc:Telephone><cbc:ElectronicMail>einkauf@ptb.de</cbc:ElectronicMail></cac:Contact></efac:Company></efac:Organization><efac:Organization><efac:Company><cac:PartyIdentification><cbc:ID schemeName="organization">ORG-0001</cbc:ID></cac:PartyIdentification><cac:PartyName><cbc:Name languageID="DEU">Vergabekammer des Bundes im Bundeskartellamt</cbc:Name></cac:PartyName><cac:PostalAddress><cbc:CityName>Bonn</cbc:CityName><cbc:PostalZone>53123</cbc:PostalZone><cbc:CountrySubentityCode listName="nuts-lvl3">DEA22</cbc:CountrySubentityCode><cac:Country><cbc:IdentificationCode listName="country">DEU</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:CompanyID>t: 0228 94990</cbc:CompanyID></cac:PartyLegalEntity><cac:Contact><cbc:Telephone>+49 22894990</cbc:Telephone><cbc:ElectronicMail>vk@bundeskartellamt.bund.de</cbc:ElectronicMail></cac:Contact></efac:Company></efac:Organization><efac:Organization><efac:Company><cac:PartyIdentification><cbc:ID schemeName="organization">ORG-0002</cbc:ID></cac:PartyIdentification><cac:PartyName><cbc:Name languageID="DEU">Datenservice Öffentlicher Einkauf (in Verantwortung des Beschaffungsamts des BMI)</cbc:Name></cac:PartyName><cac:PostalAddress><cbc:CityName>Bonn</cbc:CityName><cbc:PostalZone>53119</cbc:PostalZone><cbc:CountrySubentityCode listName="nuts">DEA22</cbc:CountrySubentityCode><cac:Country><cbc:IdentificationCode listName="country">DEU</cbc:IdentificationCode></cac:Country></cac:PostalAddress><cac:PartyLegalEntity><cbc:CompanyID schemeID="002">0204:994-DOEVD-83</cbc:CompanyID></cac:PartyLegalEntity><cac:Contact><cbc:Telephone>+49228996100</cbc:Telephone><cbc:ElectronicMail>noreply.esender_hub@bescha.bund.de</cbc:ElectronicMail></cac:Contact></efac:Company></efac:Organization></efac:Organizations><efac:Publication><efbc:NoticePublicationID schemeName="ojs-notice-id">00561190-2026</efbc:NoticePublicationID><efbc:GazetteID schemeName="ojs-id">155/2026</efbc:GazetteID><efbc:PublicationDate>2026-08-13+02:00</efbc:PublicationDate></efac:Publication></efext:EformsExtension></ext:ExtensionContent></ext:UBLExtension></ext:UBLExtensions><cbc:UBLVersionID>2.3</cbc:UBLVersionID><cbc:CustomizationID>eforms-sdk-1.13</cbc:CustomizationID><cbc:ProfileID>eforms-sdk-1.13</cbc:ProfileID><cbc:ID schemeName="notice-id">88f315e0-c8e4-41b1-a342-a051cd2b1732</cbc:ID><cbc:ContractFolderID>a0a8b9d1-3459-4c9f-9ddd-b536c8d3ba60</cbc:ContractFolderID><cbc:IssueDate>2026-08-11+02:00</cbc:IssueDate><cbc:IssueTime>15:17:30+02:00</cbc:IssueTime><cbc:VersionID>01</cbc:VersionID><cbc:RequestedPublicationDate>2026-08-11+02:00</cbc:RequestedPublicationDate><cbc:RegulatoryDomain>32014L0024</cbc:RegulatoryDomain><cbc:NoticeTypeCode listName="competition">cn-standard</cbc:NoticeTypeCode><cbc:NoticeLanguageCode listName="eu-official-language">DEU</cbc:NoticeLanguageCode><cac:ContractingParty><cac:ContractingPartyType><cbc:PartyTypeCode listName="buyer-legal-type">cga</cbc:PartyTypeCode></cac:ContractingPartyType><cac:ContractingActivity><cbc:ActivityTypeCode listName="authority-activity">econ-aff</cbc:ActivityTypeCode></cac:ContractingActivity><cac:Party><cac:PartyIdentification><cbc:ID schemeName="organization">ORG-0000</cbc:ID></cac:PartyIdentification><cac:ServiceProviderParty><cbc:ServiceTypeCode listName="organisation-role">ted-esen</cbc:ServiceTypeCode><cac:Party><cac:PartyIdentification><cbc:ID schemeName="organization">ORG-0002</cbc:ID></cac:PartyIdentification></cac:Party></cac:ServiceProviderParty></cac:Party></cac:ContractingParty><cac:TenderingTerms><cac:ProcurementLegislationDocumentReference><cbc:ID>vgv</cbc:ID></cac:ProcurementLegislationDocumentReference><cac:TendererQualificationRequest><cac:SpecificTendererRequirement><cbc:TendererRequirementTypeCode listName="exclusion-ground">exg-mis-misconduct</cbc:TendererRequirementTypeCode><cbc:Description languageID="DEU">Es gelten die Ausschlussgründe gem. §§ 123,124 GWB.
Details in der Anlage "Erklärung über das Nichtvorliegen von Ausschlussgründen gemäß §§ 123 und 124 GWB" als Teil der Vergabeunterlagen</cbc:Description></cac:SpecificTendererRequirement></cac:TendererQualificationRequest><cac:TendererQualificationRequest><cac:SpecificTendererRequirement><cbc:TendererRequirementTypeCode listName="exclusion-grounds-source">epo-notice</cbc:TendererRequirementTypeCode></cac:SpecificTendererRequirement></cac:TendererQualificationRequest></cac:TenderingTerms><cac:TenderingProcess><ext:UBLExtensions><ext:UBLExtension><ext:ExtensionContent><efext:EformsExtension><efbc:ProcedureRelaunchIndicator>false</efbc:ProcedureRelaunchIndicator></efext:EformsExtension></ext:ExtensionContent></ext:UBLExtension></ext:UBLExtensions><cbc:ProcedureCode listName="procurement-procedure-type">open</cbc:ProcedureCode><cac:ProcessJustification><cbc:ProcessReasonCode listName="accelerated-procedure">false</cbc:ProcessReasonCode></cac:ProcessJustification></cac:TenderingProcess><cac:ProcurementProject><cbc:ID schemeName="InternalID">Z.42B-Z0284#0271</cbc:ID><cbc:Name languageID="DEU">Lieferung eines Aktiven Wasserstoffmaser gemäß Leistungsbschreibung //  Delievery of an Active Hydrogen Maser in accordance with the specifications</cbc:Name><cbc:Description languageID="DEU">Die Physikalisch-Technische Bundesanstalt Braunschweig beabsichtigt die Vergabe der Lieferung eines Aktiven Wasserstoffmaser gemäß Leistungsbeschreibung.</cbc:Description><cbc:ProcurementTypeCode listName="contract-nature">supplies</cbc:ProcurementTypeCode><cac:MainCommodityClassification><cbc:ItemClassificationCode listName="cpv">38000000</cbc:ItemClassificationCode></cac:MainCommodityClassification><cac:RealizedLocation><cac:Address><cbc:CountrySubentityCode listName="nuts-lvl3">DE911</cbc:CountrySubentityCode><cac:Country><cbc:IdentificationCode listName="country">DEU</cbc:IdentificationCode></cac:Country></cac:Address></cac:RealizedLocation></cac:ProcurementProject><cac:ProcurementProjectLot><cbc:ID schemeName="Lot">LOT-0000</cbc:ID><cac:TenderingTerms><ext:UBLExtensions><ext:UBLExtension><ext:ExtensionContent><efext:EformsExtension><efac:SelectionCriteria><cbc:TendererRequirementTypeCode listName="selection-criterion">slc-stand-other</cbc:TendererRequirementTypeCode><cbc:Description languageID="DEU">Der Nachweis der Eignung (finanz. u. wirtsch. Leistungsfähigkeit) ist in den Vergabeunterlagen genannt und wird mit der Abgabe des Angebots erforderlich.</cbc:Description></efac:SelectionCriteria><efac:SelectionCriteria><cbc:TendererRequirementTypeCode listName="selection-criterion">slc-abil-ref-supply</cbc:TendererRequirementTypeCode><cbc:Description languageID="DEU">Der Nachweis der Eignung (techn. u. berufl.Leistungsfähigkeit ) ist in den Vergabeunterlagen genannt und wird mit der Abgabe des Angebots erforderlich.</cbc:Description></efac:SelectionCriteria><efac:SelectionCriteria><cbc:TendererRequirementTypeCode listName="selection-criterion">slc-suit-reg-trade</cbc:TendererRequirementTypeCode><cbc:Description languageID="DEU">Ein Auszug aus dem Wettbewerbsregister wird vor Zuschlagserteilung angefordert.</cbc:Description></efac:SelectionCriteria><efac:StrategicProcurement><efbc:ApplicableLegalBasis listName="cvd-scope">false</efbc:ApplicableLegalBasis></efac:StrategicProcurement></efext:EformsExtension></ext:ExtensionContent></ext:UBLExtension></ext:UBLExtensions><cbc:VariantConstraintCode listName="permission">not-allowed</cbc:VariantConstraintCode><cbc:FundingProgramCode listName="eu-funded">no-eu-funds</cbc:FundingProgramCode><cbc:MultipleTendersCode listName="permission">not-allowed</cbc:MultipleTendersCode><cac:CallForTendersDocumentReference><ext:UBLExtensions><ext:UBLExtension><ext:ExtensionContent><efext:EformsExtension><efac:OfficialLanguages><cac:Language><cbc:ID>DEU</cbc:ID></cac:Language></efac:OfficialLanguages></efext:EformsExtension></ext:ExtensionContent></ext:UBLExtension></ext:UBLExtensions><cbc:ID>882557-1</cbc:ID><cbc:DocumentType>non-restricted-document</cbc:DocumentType><cac:Attachment><cac:ExternalReference><cbc:URI>https://www.evergabe-online.de/tenderdocuments.html?id=882557</cbc:URI></cac:ExternalReference></cac:Attachment></cac:CallForTendersDocumentReference><cac:TendererQualificationRequest><cac:SpecificTendererRequirement><cbc:TendererRequirementTypeCode listName="selection-criteria-source">epo-notice</cbc:TendererRequirementTypeCode></cac:SpecificTendererRequirement></cac:TendererQualificationRequest><cac:TendererQualificationRequest><cac:SpecificTendererRequirement><cbc:TendererRequirementTypeCode listName="reserved-procurement">none</cbc:TendererRequirementTypeCode></cac:SpecificTendererRequirement></cac:TendererQualificationRequest><cac:TendererQualificationRequest><cac:SpecificTendererRequirement><cbc:TendererRequirementTypeCode listName="missing-info-submission">late-all</cbc:TendererRequirementTypeCode><cbc:Description languageID="DEU">Die Nachforderung von Unterlagen erfolgt gem. §56 VgV</cbc:Description></cac:SpecificTendererRequirement></cac:TendererQualificationRequest><cac:ContractExecutionRequirement><cbc:ExecutionRequirementCode listName="conditions">performance</cbc:ExecutionRequirementCode></cac:ContractExecutionRequirement><cac:ContractExecutionRequirement><cbc:ExecutionRequirementCode listName="ecatalog-submission">not-allowed</cbc:ExecutionRequirementCode></cac:ContractExecutionRequirement><cac:ContractExecutionRequirement><cbc:ExecutionRequirementCode listName="einvoicing">required</cbc:ExecutionRequirementCode></cac:ContractExecutionRequirement><cac:ContractExecutionRequirement><cbc:ExecutionRequirementCode listName="reserved-execution">no</cbc:ExecutionRequirementCode></cac:ContractExecutionRequirement><cac:AwardingTerms><cac:AwardingCriterion><cac:SubordinateAwardingCriterion><ext:UBLExtensions><ext:UBLExtension><ext:ExtensionContent><efext:EformsExtension><efac:AwardCriterionParameter><efbc:ParameterCode listName="number-weight">per-exa</efbc:ParameterCode><efbc:ParameterNumeric>60</efbc:ParameterNumeric></efac:AwardCriterionParameter></efext:EformsExtension></ext:ExtensionContent></ext:UBLExtension></ext:UBLExtensions><cbc:AwardingCriterionTypeCode listName="award-criterion-type">quality</cbc:AwardingCriterionTypeCode><cbc:Name languageID="DEU">Es werden einzelne Qualitätskriterien bewertet, die in den Vergabeunterlagen enthalten und benannt sind.</cbc:Name><cbc:Description languageID="DEU">Qualität</cbc:Description></cac:SubordinateAwardingCriterion><cac:SubordinateAwardingCriterion><ext:UBLExtensions><ext:UBLExtension><ext:ExtensionContent><efext:EformsExtension><efac:AwardCriterionParameter><efbc:ParameterCode listName="number-weight">per-exa</efbc:ParameterCode><efbc:ParameterNumeric>40</efbc:ParameterNumeric></efac:AwardCriterionParameter></efext:EformsExtension></ext:ExtensionContent></ext:UBLExtension></ext:UBLExtensions><cbc:AwardingCriterionTypeCode listName="award-criterion-type">price</cbc:AwardingCriterionTypeCode><cbc:Name languageID="DEU">Preis</cbc:Name><cbc:Description languageID="DEU">Preis</cbc:Description></cac:SubordinateAwardingCriterion></cac:AwardingCriterion></cac:AwardingTerms><cac:TenderRecipientParty><cbc:EndpointID>https://www.evergabe-online.de/tenderdetails.html?id=882557</cbc:EndpointID></cac:TenderRecipientParty><cac:TenderValidityPeriod><cbc:DurationMeasure unitCode="MONTH">3</cbc:DurationMeasure></cac:TenderValidityPeriod><cac:AppealTerms><cac:PresentationPeriod><cbc:Description languageID="DEU">Informationen über die Überprüfungsfristen: Informations- und Wartepflicht gemäß § 134 GWB</cbc:Description></cac:PresentationPeriod><cac:AppealReceiverParty><cac:PartyIdentification><cbc:ID schemeName="organization">ORG-0001</cbc:ID></cac:PartyIdentification></cac:AppealReceiverParty></cac:AppealTerms><cac:Language><cbc:ID>DEU</cbc:ID></cac:Language><cac:PostAwardProcess><cbc:ElectronicOrderUsageIndicator>true</cbc:ElectronicOrderUsageIndicator><cbc:ElectronicPaymentUsageIndicator>true</cbc:ElectronicPaymentUsageIndicator></cac:PostAwardProcess></cac:TenderingTerms><cac:TenderingProcess><ext:UBLExtensions><ext:UBLExtension><ext:ExtensionContent><efext:EformsExtension><efbc:ProcedureRelaunchIndicator>false</efbc:ProcedureRelaunchIndicator></efext:EformsExtension></ext:ExtensionContent></ext:UBLExtension></ext:UBLExtensions><cbc:SubmissionMethodCode listName="esubmission">required</cbc:SubmissionMethodCode><cbc:GovernmentAgreementConstraintIndicator>true</cbc:GovernmentAgreementConstraintIndicator><cac:TenderSubmissionDeadlinePeriod><cbc:EndDate>2026-09-10+02:00</cbc:EndDate><cbc:EndTime>23:59:00+02:00</cbc:EndTime></cac:TenderSubmissionDeadlinePeriod><cac:AdditionalInformationRequestPeriod><cbc:EndDate>2026-09-03+02:00</cbc:EndDate><cbc:EndTime>11:00:00+02:00</cbc:EndTime></cac:AdditionalInformationRequestPeriod><cac:OpenTenderEvent><cbc:OccurrenceDate>2026-09-11+02:00</cbc:OccurrenceDate><cbc:OccurrenceTime>07:00:00+02:00</cbc:OccurrenceTime></cac:OpenTenderEvent><cac:AuctionTerms><cbc:AuctionConstraintIndicator>false</cbc:AuctionConstraintIndicator></cac:AuctionTerms><cac:FrameworkAgreement><cac:SubsequentProcessTenderRequirement><cbc:Name>buyer-categories</cbc:Name></cac:SubsequentProcessTenderRequirement></cac:FrameworkAgreement><cac:ContractingSystem><cbc:ContractingSystemTypeCode listName="dps-usage">none</cbc:ContractingSystemTypeCode></cac:ContractingSystem><cac:ContractingSystem><cbc:ContractingSystemTypeCode listName="framework-agreement">none</cbc:ContractingSystemTypeCode></cac:ContractingSystem></cac:TenderingProcess><cac:ProcurementProject><cbc:ID schemeName="InternalID">Z.42B-Z0284#0271</cbc:ID><cbc:Name languageID="DEU">Lieferung eines Aktiven Wasserstoffmaser gemäß Leistungsbschreibung // Delievery of an Active Hydrogen Maser in accordance with the specifications</cbc:Name><cbc:Description languageID="DEU">Die Physikalisch-Technische Bundesanstalt Braunschweig beabsichtigt die Vergabe der Lieferung eines Aktiven Wasserstoffmaser gemäß Leistungsbeschreibung.</cbc:Description><cbc:ProcurementTypeCode listName="contract-nature">supplies</cbc:ProcurementTypeCode><cbc:Note languageID="DEU">#Besonders auch geeignet für:other-sme#,#Besonders auch geeignet für:freelance#,#Besonders auch geeignet für:startup#,#Besonders auch geeignet für:selbst#,#Besonders auch geeignet für:other-sme#</cbc:Note><cbc:SMESuitableIndicator>true</cbc:SMESuitableIndicator><cac:ProcurementAdditionalType><cbc:ProcurementTypeCode listName="innovative-acquisition">rd-act</cbc:ProcurementTypeCode></cac:ProcurementAdditionalType><cac:ProcurementAdditionalType><cbc:ProcurementTypeCode listName="strategic-procurement">none</cbc:ProcurementTypeCode></cac:ProcurementAdditionalType><cac:MainCommodityClassification><cbc:ItemClassificationCode listName="cpv">38000000</cbc:ItemClassificationCode></cac:MainCommodityClassification><cac:RealizedLocation><cac:Address><cbc:CountrySubentityCode listName="nuts-lvl3">DE911</cbc:CountrySubentityCode><cac:Country><cbc:IdentificationCode listName="country">DEU</cbc:IdentificationCode></cac:Country></cac:Address></cac:RealizedLocation><cac:PlannedPeriod><cbc:DescriptionCode listName="duration">UNKNOWN</cbc:DescriptionCode></cac:PlannedPeriod></cac:ProcurementProject></cac:ProcurementProjectLot></ContractNotice>