diff --git a/server/basicknowledge/migrations/0011_auto_20211031_1144.py b/server/basicknowledge/migrations/0011_auto_20211031_1144.py
new file mode 100644
index 00000000..d187aacb
--- /dev/null
+++ b/server/basicknowledge/migrations/0011_auto_20211031_1144.py
@@ -0,0 +1,18 @@
+# Generated by Django 2.2.24 on 2021-10-31 11:44
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('basicknowledge', '0010_auto_20211030_2004'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='instrumenttype',
+            name='name',
+            field=models.CharField(max_length=255, unique=True),
+        ),
+    ]
diff --git a/server/basicknowledge/models.py b/server/basicknowledge/models.py
index b1d3755f..3c987493 100644
--- a/server/basicknowledge/models.py
+++ b/server/basicknowledge/models.py
@@ -1,4 +1,5 @@
 from django.db import models
+from django.utils.text import slugify
 from wagtail.admin.edit_handlers import FieldPanel, StreamFieldPanel
 from wagtail.core.fields import RichTextField, StreamField
 from wagtail.images.blocks import ImageChooserBlock
@@ -20,14 +21,18 @@ class InstrumentType(models.Model):
         (INTERDISCIPLINARY, 'Überfachliches Instrument'),
     )
 
-    name = models.CharField(max_length=255)
+    name = models.CharField(max_length=255, unique=True)
     category = models.CharField(
         max_length=100,
         choices=CATEGORY_CHOICES
     )
 
+    @property
+    def type(self):
+        return slugify(self.name.lower())
+
     def __str__(self):
-        return self.name
+        return self.type
 
 
 class BasicKnowledge(StrictHierarchyPage):
diff --git a/server/basicknowledge/queries.py b/server/basicknowledge/queries.py
index e1339205..0b27f10b 100644
--- a/server/basicknowledge/queries.py
+++ b/server/basicknowledge/queries.py
@@ -1,7 +1,6 @@
 import graphene
 from graphene import relay
 from graphene_django import DjangoObjectType
-from graphene_django.filter import DjangoFilterConnectionField
 
 from api.utils import get_object
 from notes.models import InstrumentBookmark
@@ -10,17 +9,22 @@ from .models import BasicKnowledge, InstrumentType
 
 
 class InstrumentTypeNode(DjangoObjectType):
+    type = graphene.String(required=True)
+
     class Meta:
         model = InstrumentType
         only_fields = [
-            'name', 'category'
+            'name', 'category', 'type', 'id'
         ]
 
+    @staticmethod
+    def resolve_type(root: InstrumentType, info, **kwargs):
+        return root.type
+
 
 class InstrumentNode(DjangoObjectType):
     bookmarks = graphene.List(InstrumentBookmarkNode)
-    type = graphene.String()
-    category = graphene.String()
+    type = graphene.Field(InstrumentTypeNode)
 
     class Meta:
         model = BasicKnowledge
@@ -32,11 +36,7 @@ class InstrumentNode(DjangoObjectType):
 
     @staticmethod
     def resolve_type(root: BasicKnowledge, info, **kwargs):
-        return root.new_type.name
-
-    @staticmethod
-    def resolve_category(root: BasicKnowledge, info, **kwargs):
-        return root.new_type.category
+        return root.new_type
 
     def resolve_bookmarks(self, info, **kwargs):
         return InstrumentBookmark.objects.filter(
@@ -44,6 +44,7 @@ class InstrumentNode(DjangoObjectType):
             instrument=self
         )
 
+
 class InstrumentQuery(object):
     instrument = graphene.Field(InstrumentNode, slug=graphene.String(), id=graphene.ID())
     instruments = graphene.List(InstrumentNode)
diff --git a/server/schema.graphql b/server/schema.graphql
index 105ff4ce..692ebc21 100644
--- a/server/schema.graphql
+++ b/server/schema.graphql
@@ -606,8 +606,7 @@ type InstrumentNode implements Node {
   contents: GenericStreamFieldType
   id: ID!
   bookmarks: [InstrumentBookmarkNode]
-  type: String
-  category: String
+  type: InstrumentTypeNode
 }
 
 type InstrumentNodeConnection {
@@ -627,8 +626,10 @@ enum InstrumentTypeCategory {
 }
 
 type InstrumentTypeNode {
+  id: ID!
   name: String!
   category: InstrumentTypeCategory!
+  type: String!
 }
 
 scalar JSONString